Question

Subtract 12u +7v from 20u +13v.

Answer 1

We must subtract 12u + 7v from 20u + 13v.

1) Applying the associative property of the sum, we have:

`(20u+13v)-(12u+7v)=(20u-12u)+(13v-7v)\text{.}`

2) Computing the difference of each parenthesis, we get:

`8u+6v\text{.}`

Answer

`8u+6v`