Hillcerbitid
Hillcerbitid
Math
Answered
Solve the following by substitution:
2x + 3y = 1
x - y = 3
Sagot :
Mlcparra16id
Mlcparra16id
We can make the second equation as follows:
x - y = 3
x = y + 3
So we plug this in to the first equation:
2(y + 3) + 3y = 1
2y + 6 + 3y = 1
5y = -5
y = -1
So: x = -1 + 3 = 2
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