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Kisachek [45]
4 years ago
9

giselle is 4 years older than her brother marco. the sum of their ages is 30. Write and solve a system of equations to find thei

r ages
Mathematics
1 answer:
Salsk061 [2.6K]4 years ago
5 0
Because we don’t know Marco’s age just put x in instead

4+x=30

To find x in this equation you have to isolate it. You do that by subtracting 4

30-4=x

That means that x=26
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