4 years ago

(x + y = 17 (y = x+7 Solve using substitution

Mathematics

1 answer:

Cloud [144]4 years ago

7 0

X+y=17
Y=x+7
X+x+7=17
2x+7=17
-7. -7
2x. =10
—- —
2. 2
X. = 5

Check:
Y=5+7
Y=12

Answer
X=5
Y=12

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