Question

Solve the equation, and check your solution -4 (r+2) =4 (2-2r) r= ________ Thanks for anyone who helps me :)

Answer 1

Answer:

r=4

Step-by-step explanation:

-4 (r+2) =4 (2-2r)

Divide each side by 4

-4/4 (r+2) =4/4 (2-2r)

-(r+2) = (2-2r)

Distribute

-r-2 = 2-2r

Add 2r to each side

-r+2r -2 = 2-2r+2r

r-2 =2

Add 2 to each side

r-2+2 =2+2

r=4

Check

-4 (r+2) =4 (2-2r)

-4 (4+2) =4(2-2*4)

-4(6) =4(2-8)

-24 = 4(-6)

-24 = -24

This checks

Answer 2

Answer:

r=4

Step-by-step explanation:

1) lets distribute "-4" and "4"

-4r-8=8-8r

2) bring -8r to the left and -8 to the right and combine like terms

-4r+8r=8+8

4r=16

divide by 4 on both sides:

r=4

check by substituting "r" as 4:

-4(4+2)=4(2-2(4))

-24=-24

this statement is true so r=4 is correct

hope this helps!