Basic Math Examples

$r - 3 s + 4 + (8 r + 2 s) + (s + 2)$

Step 1

Remove parentheses.

$r - 3 s + 4 + 8 r + 2 s + s + 2$

Step 2

Add $r$ and $8 r$ .

$9 r - 3 s + 4 + 2 s + s + 2$

Step 3

Add $- 3 s$ and $2 s$ .

$9 r - s + 4 + s + 2$

Step 4

Combine the opposite terms in $9 r - s + 4 + s + 2$ .

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Step 4.1

Add $- s$ and $s$ .

$9 r + 0 + 4 + 2$

Step 4.2

Add $9 r$ and $0$ .

$9 r + 4 + 2$

Step 5

Add $4$ and $2$ .

$9 r + 6$