6.75 divided by x equals 1

6.75 divided by x equals 1

6.75÷x=1.8
x=6.75÷1.8
x=3.75

Solve the equation. 3 times (2x-5 () = 9

2x-5=3,2x=8
x=4

Solution equation: 21-4.2x + 7.2x-9 = 24

21-4.2x+7.2x-9=24
7.2x-4.2x=24+9-21
3x=12
x=4

3x+y=5 2x-3y=-4

This one
The term y = 5-3x is transferred from 3x + y = 5 to another form
have to
2x-3(5-3x)=-4
That is 11x = 11x = 1
Back substitution y = 2
Because the former is replaced by the latter, it is the substitution method

The number a is 360. The number a is 50% of the number B. what's the number B

The number B is: 360 △ 50% = 720

The number of a is 7 times that of B, the number of a is 360 more than that of B, and the number of B is 1______ ．

According to the meaning of the question, from the difference multiple formula, we can get: number B is: 360 ÷ (7-1) = 60. Answer: number B is 60. So the answer is: 60

The number of nails is 50 times more than the number of nails. The number of nails is 360. What is the number of nails

155
155x2+50=360

60% of the number a is 30 less than half of the number B. if the number a is 150, find the number B. (solve the equation)

Let B be X
Then 150 × 60% = x / 2-30
x/2-30=90
x/2=90+30=120
x=120÷1/2=240
So B is 240

(1) The number B is 360, which is 12 times more than the number A. find this number. (use the solution of the equation). (2) find the greatest common divisor of 28 and 32
(3) A fraction is the sum of the numerator and denominator is 28, and the ratio of the numerator and denominator is 1:3. What is the fraction? (4) what is the quality factor of 48?

(1) 360 = 3x + 12 gives x = 116
（2） 4
（3） 7/21
(4) 48=2X2X2X2X3

The number a is 240 and the number B is 360. When the number a gives the number B, the number B is five times the number a

140
5*(240-#)=(360+#)
#=140