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1.3x+2.2x=-24.5
We move all terms to the left:
1.3x+2.2x-(-24.5)=0
We add all the numbers together, and all the variables
3.5x+24.5=0
We move all terms containing x to the left, all other terms to the right
3.5x=-24.5
x=-24.5/3.5
x=-7
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