5a-20+a(-3)=50

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Solution for 5a-20+a(-3)=50 equation: 



5a-20+a(-3)=50

We move all terms to the left:

5a-20+a(-3)-(50)=0

We add all the numbers together, and all the variables

5a+a(-3)-70=0

We multiply parentheses

5a-3a-70=0

We add all the numbers together, and all the variables

2a-70=0

We move all terms containing a to the left, all other terms to the right

2a=70

a=70/2

a=35

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