2x+8y=54
x+9y=67
Solve the system by subtitution
1 answer:
Step-by-step explanation:
2x +8y = 54
x + 9y = 67
x = 67 - 9y
2(67-9y) + 8y = 54
434 - 18y + 8y = 54
434 - 10y = 54
10y = 54 - 434
10y = -380
y = -38
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