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diamong [38]
3 years ago
7

Find a, (x-3) + (x-a) = 15

Mathematics
1 answer:
slega [8]3 years ago
8 0

a = 2x - 18

remove the parenthesis and simplify

x - 3 + x - a = 15

2x - 3 - a = 18 ( add 3 to both sides

2x - a = 18 ( subtract 2x from both sides )

- a = 18 - 2x ( multiply through by - 1 )

a = - 18 + 2x

a = 2x - 18


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