Question

What is4-8a=4(5-3a)​

Answer 1

4-8a=4(5-3a)​

multiply the bracket by 4

(4)(5)=20

(4)(-3a)=-12a

4-8a=20-12a

move -8a to the other side

sign changes from -8a to +8a

4-8a+8a=20-12a+8a ( combine like terms)

4=20-12a+8a

4=20-4a

move 20 to the other side

4-20=20-20-4a

-16=-4a

divide both sides by -4 to get +a and get it by itself

-16/-4=-4a/-4

a=-16/-4

Answer:

a=4

Answer 2

a=4

Explanation:

Question: 4-8a=4(5-3a)

1) Distribute 4 to 5 and -3a:

4-8a=20-12a

2) Add 12a to both sides:

4+4a=20

3) Subtract 4 from both sides:

4a=16

4) Divide both sides by 4:

a=4

Footnotes:

- The Distributive property says a(b+c)=ab+ac