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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 their ages
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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 their ages

User NickAth
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1 Answer

2 votes
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
User Momar
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