Question

What is the value of r in the equation?
-1.5(4-r)=-12
0 -6
-4
4
06

Answer 1

r = -4

Step-by-step explanation: I hope it helps :)

`-1.5(4-r)=-12\\\\\mathrm{Multiply\:both\:sides\:by\:}10\\\\-1.5\left(4-r\right)\cdot \:10=-12\cdot \:10\\\\= -15\left(4-r\right)=-120\\\\\mathrm{Divide\:both\:sides\:by\:}-15\\\\(-15\left(4-r\right))/(-15)=(-120)/(-15)\\\\4-r=8\\\\\mathrm{Subtract\:}4\mathrm{\:from\:both\:sides}\\\\4-r-4=8-4\\\\-r=4\\\\\mathrm{Divide\:both\:sides\:by\:}-1\\\\(-r)/(-1)=(4)/(-1)\\\\r=-4`

Answer 2

r = -4

Explanation:

-1.5(4-r)=-12

Divide each side by -1.5

-1.5/-1.5(4-r)=-12/-1.5

(4-r)=8

Subtract 4 from each side

4-r-4 = 8-4

-r = 4

Divide each side by -1

r = -4