Ferderandlei820id
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Solve the following systems by substitution method:
x + 3y = -4
2y + 3x = 3

Sagot :

Mlcparra16id
x + 3y = -4
x = -4 -3y

So we substitute this to the second equation:
2y + 3(-4 -3y) = 3
2y -12 - 9y = 3
-7y = 15
y = -15/7

x = -4 + 45/7
x = 17/7

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