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13-11-2017
Mathematics

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PLEASE HELP!! Solve the following equations
1. 7(a+2)-5= 4a+27

2. 4(2x-1) = -x+5

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Аноним Аноним

13-11-2017

Simplify the first to
7a+9=4a+27
subtract 4a from both sides
7a+9-4a=4a+27-4a
3a+9=27
subtract 9 from both sides.
3a+9-9=27-9
3a=18
divide by 3
3a/3=18/3
a=6

2nd. x=1
hope this helps!

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