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OpenStudy (anonymous):
x+2y=7 2x-3y=-21 solving equations by substituion
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OpenStudy (aripotta):
solve for x in the first equation
OpenStudy (aripotta):
the substitute that for x in the second equation
OpenStudy (aripotta):
then*
OpenStudy (aripotta):
do you need any more help?
OpenStudy (anonymous):
no but when im solving by substitution i solve for x then just plug it in to the x in the second equation?
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OpenStudy (aripotta):
yea, then you can solve for y. once you solve for y, you can solve for x
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