Question

Find the sum: (7b
-2) + (-4b + 5)

Answer 1

`=3b+3`

Explanation:

`\mathrm{Remove\:parentheses}:\quad \left(a\right)=a`,
`=7b-2-4b+5`.

`\mathrm{Group\:like\:terms}`:

`=7b-4b-2+5`

`\mathrm{Add\:similar\:elements:}\:7b-4b=3b`

`=3b-2+5`

`\mathrm{Add/Subtract\:the\:numbers:}\:-2+5=3`

`=3b+3`