Question

1)2x-5y = -9
x + 4y = 2
2) 4x+3y=10
7x-2y=3
3)6x-4y=-6
x+y=4
4)5x+2y=-1
9x+4y=1
5)4x-y=-6
6x+3y=-3
system equations by substitution method helps not understand!!

Answer 1

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