Question 98532


{{{-7+6=4a-1+20}}} Start with the given equation



{{{-1=4a-1+20}}} Combine like terms on the left side



{{{-1=4a+19}}} Combine like terms on the right side



{{{0=4a+19+1}}}Add 1 to both sides



{{{-4a=19+1}}} Subtract 4a from both sides



{{{-4a=20}}} Combine like terms on the right side



{{{a=(20)/(-4)}}} Divide both sides by -4 to isolate a




{{{a=-5}}} Divide


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Answer:

So our answer is {{{a=-5}}}