Simplify 7r+3r-15s-10r+8s

$7 r + 3 r - 15 s - 10 r + 8 s$

Step 1

Add $7 r$ and $3 r$ .

$10 r - 15 s - 10 r + 8 s$

Step 2

Combine the opposite terms in $10 r - 15 s - 10 r + 8 s$ .

Subtract $10 r$ from $10 r$ .

$- 15 s + 0 + 8 s$

Add $- 15 s$ and $0$ .

$- 15 s + 8 s$

Step 3

Add $- 15 s$ and $8 s$ .

$- 7 s$