Question

How do you simplify `- 1+ 10( 7a + 2) - 4a`?

Answer 1

`19+66a`

Explanation:

According to PEMDAS, first multiply 10 through the binomial `7a+2`:

`-1+10(7a+2)-4a`
`=-1+color(blue)(10(7a)+10(2))-4a`
`=-1+70a+20-4a`

Now, combine like terms.

`=-1+20+70a-4a`
`=19+66a`