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irinina [24]
3 years ago
11

Linear equation

Mathematics
1 answer:
Mazyrski [523]3 years ago
6 0
<h2><u>Answer:</u></h2>

Susan = x

Gina = 3x

Sum of their ages = 12

Susan's age = ?

We can see that,

2x=10x = \frac{10}{2}x= 210  x = 5x=5

Susan is <u>3</u><u> </u><u>years </u>old.

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