Answer:
30s-18
Step-by-step explanation:
(10s-8)+(10s-8)+(7s-1)+(3s-1)=?
Combine like terms.
2(10s-8)+(7s-1)+(3s-1)
Remove parentheses.
2(10s-8)+7s-1+3s-1
Collect like terms.
2(10s-8)+10s-1-1
Subtract.
2(10s-8)+10s-2
Factor out 2 from the expression.
2(10s-8+5s-1)
Collect like terms.
2(15s-8-1)
Subtract.
2(15s-9)
Factor out 3 from the expression.
2x3(5s-3)
Multiply.
6(5s-3)
Simplified=30s-18
Hope this helps :)
