Mathematics
IsabelK
16

Solve using substitution. x + 2y = 14 -5x + y = 18

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(2) Answers
sugarcol8

x + 2y = 14 -5x + y = 18 --> y = 5x +18 x + 2(5x+18)  = 14 x + 10x +36 = 14 11x + 36 = 14 11x = -22 x = -2 sub x = -2 back in one of first two equations: x + 2y = 14 -2 + 2y = 14 2y = 16 y = 8 x = -2, y = 8

jacquelynn

[latex]x+2y=14\\ -5x+y=18\\ y=18+5x\\ x+2(18+5x)=14\\ x+36+10x=14\\ 11x=14-36\\ 11x=-22\\ x=-2\\ -5(-2)+y=18\\ 10+y=18\\ y=8[/latex]

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