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elena55 [62]
3 years ago
10

Is a= -2 a solution to 7= a -9

Mathematics
2 answers:
Radda [10]3 years ago
6 0
No

7 = a - 9
add 9 to both sides
7 + 9 = a - 9 + 9 \\ 7 + 9 = a \\ 16 = a \\ a = 16
Blizzard [7]3 years ago
6 0
Substitute a=-2 into 7=a-9 and will get 7=-2-9 so 7=-11 so since this is not true
a=-2 in NOT a solution for 7=a-9
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