Question

How do you simplify `-5a+10a+3b+7a-3b`?

Answer 1

`=12a`

Explanation:

`−5a+10a+3b+7a−3b`
`color(blue)(−5a+10a)+color(green)(3b)+color(blue)(7a)−color(green)(3b`

Grouping like terms

`= color(blue)(−5a+10a +7a)+color(green)(3b−3b`

`= color(blue)(5a +7a)+color(green)(0`

`=12a`