1.2x-7=1.3(x-12) how do you solve this equation

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.:

x = 86.

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40

they used 313 gallons of paint