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15x+30=-7+22
We move all terms to the left:
15x+30-(-7+22)=0
We add all the numbers together, and all the variables
15x+30-15=0
We add all the numbers together, and all the variables
15x+15=0
We move all terms containing x to the left, all other terms to the right
15x=-15
x=-15/15
x=-1
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