Answer
28a-20
Work Step by Step
4[7(a-1)+2]
First use the distributive property on the parentheses.
4[7(a)-7(1)+2]
Then multiply inside the brackets.
4[7a-7+2]
Then add inside the brackets to combine the constants]
4[7a-5]
Then use the distributive property on the brackets.
4(7a)-4(5)
Then multiply.
28a-20
