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Gnom [1K]
3 years ago
15

Four times marie's age minus twice lisa's age is -10. lisa is three times as old as marie. how old is marie?

Mathematics
1 answer:
Brrunno [24]3 years ago
6 0
Marie is 5 years old

4m - 2l = -10 ------- x
l = 3m ---------------- y

sub y into x
4m - 2(3m) = -10
4m - 6m = -10
-2m = -10
m = -10/-2
m = 5 years old
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Example 3·x + 5 = 11

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