1.2x-7=1.3(x-12) how do you solve this equation Question 1.2x-7=1.3(x-12) how do you solve this equation in progress 0 Math Julia 1 week 2022-01-07T05:34:32+00:00 2022-01-07T05:34:32+00:00 1 Answer 0 views 0

## Answers ( )

Answer:x = 86.

Step-by-step explanation:Solve for x:

1.2 x – 7 = 1.3 (x – 12)

Expand out terms of the right hand side:

1.2 x – 7 = 1.3 x – 15.6

Subtract 1.3 x from both sides:

(1.2 x – 1.3 x) – 7 = (1.3 x – 1.3 x) – 15.6

1.2 x – 1.3 x = -0.1 x:

-0.1 x – 7 = (1.3 x – 1.3 x) – 15.6

1.3 x – 1.3 x = 0:

-0.1 x – 7 = -15.6

Add 7 to both sides:

(7 – 7) – 0.1 x = 7 – 15.6

7 – 7 = 0:

-0.1 x = 7 – 15.6

7 – 15.6 = -8.6:

-0.1 x = -8.6

Divide both sides of -0.1 x = -8.6 by -0.1:

(-0.1 x)/(-0.1) = (-8.6)/(-0.1)

(-0.1)/(-0.1) = 1:

x = (-8.6)/(-0.1)

(-8.6)/(-0.1) = 86.:

Answer: x = 86.