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-7(4-20)-8a+4=-26
We move all terms to the left:
-7(4-20)-8a+4-(-26)=0
We add all the numbers together, and all the variables
-8a+4-7(-16)-(-26)=0
We add all the numbers together, and all the variables
-8a+142=0
We move all terms containing a to the left, all other terms to the right
-8a=-142
a=-142/-8
a=17+3/4
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