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Linear Algebra
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OpenStudy (anonymous):
Solve system by subsitution. 3x+y=22 -4x+8y=-20
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OpenStudy (anonymous):
y= 22-3x ...-4x + 8(22-3x) = -20 solve for x then solve for y
OpenStudy (anonymous):
I really don't have a clue at all
OpenStudy (anonymous):
I haven't did this kind of math in over 30 years that why it strange and confusing
OpenStudy (anonymous):
3x+y=22 -4x+8y=-20 -8(3x+y=22) -24x-8y=-176 -4x+8y=-20 -28x=-198 -28 -28
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