Question

Find the following sums. Please help.

Answer 1

#1

`\\ \sf\longmapsto 3m-4n+7p+(-5m+9n-6p)+7m-6n-5p`

`\\ \sf\longmapsto 3m-4n+7p-5m+9n-6p+7m-6n-5p`

`\\ \sf\longmapsto 3m-5m+7m-4n+9n-6n+7p-6p-5p`

`\\ \sf\longmapsto 5m-n-4p`

#2

`\\ \sf\longmapsto a^2-3x+1+a^2+9x-6+2a^2+2`

`\\ \sf\longmapsto a^2+a^2+2a^2-3x+9x+1-6+2`

`\\ \sf\longmapsto 4a^2+6x-3`

Answer 2

5m-n-4p

4a^2+6x-3

Explanation:

3m-4n +7p

-5m +9n -6p

+7m -6n -5p

----------------------

Combine like terms

3m-4n +7p

-5m +9n -6p

+7m -6n -5p

----------------------

(3-5+7)m +(-4+9-6)n +(7-6-5)p

5m-n-4p

a^2 -3x +1

a^2 +9x -6

2a^2 +0x +2

----------------------

Combine like terms

a^2 -3x +1

a^2 +9x -6

2a^2 +0x +2

----------------------

(1+1+2)a^2 +(-3+9+0)x +(1-6+2)

4a^2+6x-3