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Salsk061 [2.6K]
3 years ago
15

Solve -a+7=2a-8 Show your work.

Mathematics
2 answers:
icang [17]3 years ago
8 0
1st combine like terms
1a=(-1)
a=(-1) I think thats it

fenix001 [56]3 years ago
5 0
-a+7=2a-8
-a+a+7=2a+a-8    add a on both sides
7+8=3a-8+8         add 8 on both sides
15/3=3a/3             divide 3 on both sides
a=5                     solution
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The sum of two numbers is 14 and their difference is 4
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shtirl [24]

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gulaghasi [49]

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