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X=7y-9 X+7y=8 Need help using substitution. ?! Please
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X=7y-9
X+7y=8

Need help using substitution. ?! Please

User Tanjima Kothiya
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1 Answer

5 votes
X=7y-9
X=-7y+8
7y-9=-7y+8
+9= +9
7y=-7y+17
+7y=+7y
14y=17
14y/14=17/14
Y=17/14
User Geckon
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7.8k points
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