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31 January, 19:43
X + 7y = "70" 3x - 6y = - 33 step by step
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Jayvion Bird
31 January, 21:11
0
x=7
y=9
Step-by-step explanation:
x+7y=70 ... (1)
3x-6y=-33
divide by 3
x-2y=-11 ... (2)
(1) - (2) gives
x+7y-x+2y=70+11
9y=81
y=9
x-2*9=-11
or x=-11+18=7
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