Answered

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x + 2y = 10
-6x + 5y = -9
- what is the solution using substitution

Sagot :

X+2Y=10
X=10-2Y

-6X+5Y= -9
-6(10-2Y)+5Y= -9
-60+12Y+5Y= -9
17Y= -9+60
17Y=51
Y=3

X=10-2Y
X=10-2•3
X=10-6
X=4
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