Solve the equation 2x + 3 = 3x + 1.5

Solve the equation 2x + 3 = 3x + 1.5

2x+3=3x+1.5
3x-2x=3-1.5
x=1.5
2x+3=3x+1.5
3x-2x=3-1.5
x=1.5
2x+3=3x+1.5
3-1.5 = 3x-2x
The solution is: x = 1.5
One point five
x=1.5
3-1.5=3x-2x
1.5=x
x=1.5
2x+3=3x+1.5
2x-3x=1.5-3
- x=-1.5
x=1.5
2x+3=3x+1.5
2x-3x=1.5-3
-x=-1.5
x=1.5
-x=-1.5
x=1.5
Solving equation 3 ^ 3x + 1 × 5 ^ 3x + 1 = 15 ^ 2x + 4
3^(3x+1)×5^(3x+1)=15^(2x+4)
15^(3x+1)=15^(2x+4)
3x+1=2x+4,
3x-2x=4-1
X=3
In the following formulas: AB / 3, - 4, - 2 / 3 * ABC, 0, X-Y, 3 / x, how many monomials are there?
Monomials: AB / 3, - 4, - 2 / 3 * ABC, 0,3 / X
Letters can be used to express the formula, rules and what
Algebraic expression
If the solution set of inequality a ≤ 34x2-3x + 4 ≤ B about X is exactly [a, b], then a + B=______ .
Let f (x) = 34x2-3x + 4, when x = - - 32 × 34 = 2, f (x) min = 1, and f (a) = f (b) = B, a < B, get 34b2-3b + 4 = B from F (b) = B, get b = 43 (rounding off) or B = 4, get b = 4, get a = 0 from x = 2, so a + B = 4
It is known that the symmetry axis of parabola is a straight line x = 1, and through (1,2) and (- 2,5), the relation of quadratic function is obtained
Let the analytic expression of quadratic function be y = AX2 + BX + C (a ≠ 0). Then according to the meaning of the problem, we get a + B + C = 24a − 2B + C = 5 − B2A = 1, and the solution is a = 13b = − 23C = 73, ∪ the analytic expression of the quadratic function is y = 13x2-23x + 73
Given the set u = {x, - 3 is less than or equal to x, less than or equal to 3}, M = {x, - 1 is less than x, less than 1}, Cun = {x, 0 is less than x, less than 2}, then how much is the set n = and M Union (Cun)=
Set u = {x, - 3 ≤ x ≤ 3}, M = {x, - 1 ＜ x ＜ 1}, Cun = {x, 0 ＜ x ＜ 2}
In U, if you remove Cun = {x, 0 ＜ x ＜ 2}, you can see it by drawing a number axis. Generally, this kind of problem does not need a process
N = {x, 2 ≤ x ≤ 3 or - 3 ≤ x ≤ 0}
M = {x, - 1 ＜ x ＜ 1} and Cun = {x, 0 ＜ x ＜ 2} = {x, 0 ＜ x ＜ 1}
In the algebraic formula X & # 178;, - ABC, x + y, 0, X & # 178; - 2x, a / 3, 3 / A, the monomials are (). A.3, b.4, C.5, d.6
X + y.x & # 178; - 2x has sum and difference operation, so it is not monomial
3 / A, the denominator with the letter ∧ is not a monomial
The rest X & # 178;, - ABC, 0, a / 3 are monomials
There are four
Choose B
C · 5 x & # 178; 3 / A / 30 - ABC!
There are three workshops. Workshop a covers an area of 1200 square meters. Workshop B covers 1 / 5 more than workshop a and 1 / 4 less than workshop C. how many square meters does workshop C cover?
1200 * (1 + 1 / 5) / (1-1 / 4) = 1920 (M2)
How to calculate 4x-16 / 3 + (3x + 1) = 9
Multiply 3 on both sides
(4x-16)+3(3x+1)=9×3
4x-16+9x+3=27
13x=27+16-3=40
x=40÷13
x=40/13
4x-16/3+(3x+1)=9
7x=9+16/3-1
7x=40/3
x=40/21
4x-16/3+(3x+1)=9
7x=9-1-+16/3
7x=40/3
x=40/21
To denominator 12x-16 + 9x + 3 = 27
X=40/21
No mistake
4x+3x-16/3+1=9
7x=9-1+16/3
I'll figure it out for myself
Add up all the coefficients before x on the left, move all the ones without x to the right, and divide the number on the right by the coefficients before x on the left. The result is 40 / 21
If your topic is (4x-16) / {3 + (3x + 1)} = 9
The result is x = - 52 / 23