Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$15-(-5)+12+(-8)+(-3); 160+(-150)+(-130)-(-100)$$

Answer

15+5+12-8-3;160-150-130+100

Solution


Remove parentheses.
\[\begin{aligned}&15+5+12-8-3\\&160-150-130+100\end{aligned}\]
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