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x+4=-1.5-21
We move all terms to the left:
x+4-(-1.5-21)=0
We add all the numbers together, and all the variables
x+4-(-22.5)=0
We add all the numbers together, and all the variables
x+26.5=0
We move all terms containing x to the left, all other terms to the right
x=-26.5
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