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Sergio [31]
3 years ago
6

When 4 times a number is increased by 40, the answer is the same as when 100 is decreased by the number. find the number?

Mathematics
1 answer:
umka21 [38]3 years ago
8 0
The number is x

4x+40=100-x
add x to both sides
5x+40=100
minus 40 both sides
5x=60
divide both sides by 5
x=12
the number is 12
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