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3X+2Y=82X+5Y=18please mark me |
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Answer» Answer: x=14.3 y=-17.5 Step-by-step explanation: 3x+2y=8 3x=8-2y x=(8-2y)/3 equation 1 now PUT the VALUE of x in 2nd equation 2(8-2y)/3+5y=18 (16-4y)/3=18 16-4y=18×3 16-4y=54 -4y=54+16 -4y=70 y=70/-4 y=-17.5 now put the value of y in equation 1 x=[8-2(-17.5)]/3 x=(8+35)/3 x=43/3 x=14.3 |
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