How to do 4x divided by 4 minus a

Is it 4x / (4-A) or (4x / 4) - a that makes it unclear

Solving equation x / (2x + 1) + 1 / (3x + 2) = 0

x/(2X+1)+1/(3X+2)=0
x(3x+2)+(2x+1)=0
3x²+4x+1=0
(3x+1)(x+1)=0
x1=-1/3
x2=-1

2x-7 = 3x + 2, we get 2x-3x = 2 + 7, in this deformation, we add () a) 3x + 7 b) 3x-7 C) - 3x + 7 d) - 3x-7 on both sides of the equation

At the same time: 7-3x
Choose C

The correct distortion of equation 12 (13X − 14) − 2x − 16 = 1 is ()
A. 12(13x−14)−4(2x−1)＝24B. 4x−324+2x−16＝1C. 16x−18−13x−16＝1D. 6（x-3）-2（2x-1）=12

A. If both sides of the equation are multiplied by the least common multiple of denominator 24, the deformation is correct; B. if the first term is divided correctly, but the minus sign is written as a plus sign when copying the second term, so this option is wrong; C. if the fourth term - 16 should be + 16, so this option is wrong; D. if both sides of the equation are multiplied by 12, the first term is wrong, so this option is wrong

Derivative of piecewise function of higher number
I might be a little stupid,
There is a theorem that says, "if the left and right derivatives of a function exist and are equal at x0, then it can be derived at x0.",
So if a piecewise function, x > = 0, y = x + 1, X

According to the definition: right derivative = 1, left derivative = infinite (Note: F (0) = 1)
So the left and right derivatives are not equal. So they are not differentiable
In fact, according to the discontinuity, it can be proved that x = 0 is not differentiable without definition

Please answer the composition in detail, thank you! (13 15:59:12)
Puai wanted to go to the railway station, but he didn't know the way to the station. So he asked the police for help. The police told him that the railway station was five kilometers away. Take bus No.18 and get off at the third station. The railway station is just opposite the bus station

Paul:Excuse me ,Uncle Police.I'm new here.Can you tell me which way I can get to the railway station?
Police:Oh ,the railway station is five kilometers away from here.You can take the No.18 bus there.And you can get off at the No.3 bus stop.The railway station is just opposite to the stop.
Paul:Thank you ,uncle!Bye-bye.
Police:You 're welcome.Good luck!Bye!

Sequence 1, − 45, 59, − 617733, − 865 A general formula of is______ ．

From the known sequence 33, − 45, 59, − 617733, − 865 We can get that the denominator of each item of the sequence is an equal ratio sequence {2n} plus constant 1, numerator n + 2, and all odd items of the sequence are positive, even items are negative, so (- 1) n-1 can be used to control the sign of each item, so a general formula of the sequence is an = (− 1) n − 1n + 22n + 1, so the answer is: an = (− 1) n − 1n + 22n + 1

Two planes are perpendicular. What theorem is the projection of a point on a plane to another plane at the intersection?

The property theorem that plane is perpendicular to plane can be explained

What is the reaction between white vinegar and soda ash?
It's better to have a chemical equation

The main component of white vinegar is acetic acid CH3COOH and soda is sodium carbonate Na2CO3
Na2CO3 + 2CH3COOH====2CH3COONa + CO2↑ + H2O

The physical meaning of Bernoulli equation
I hope to be more specific

The ideal fluid flowing stably in the tube has three forms of energy: pressure energy, potential energy and kinetic energy. These three kinds of energy can be converted to each other on any section, but the sum of them is constant, that is, energy conservation

How to do 4x divided by 4 minus a