Question

Write an equivalent expression for each of the following by combining like terms

3a+4(5a - 4)=

5b -2(5a -b) + 10a

Answer 1

17a - 16

7b

Explanation:

Given the following expressions

3a+4(5a - 4)=

Expand

3a + 4(5a)- 4(4)

= 3a + 20a - 16

= 17a - 16

For the expression

5b -2(5a -b) + 10a

Expand

5b - 2(5a)-2(-b) + 10a

5b - 10a + 2b + 10a

= 5b + 2b -10a + 10a

= 7b + 0

= 7b