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4a-40=7(-29+2)
We move all terms to the left:
4a-40-(7(-29+2))=0
We add all the numbers together, and all the variables
4a-40-(7(-27))=0
We add all the numbers together, and all the variables
4a+149=0
We move all terms containing a to the left, all other terms to the right
4a=-149
a=-149/4
a=-37+1/4
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