x + 7 = 10; 3х - 2y = 7
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Answer:
1)x+7=10
x=10-7
x=3
2)3x-2y=7
x=3(before answer)
3(3)-2y=7
9-2y=7
9-7=2y
-2=2y
-2/2=1/y
-1=1/y
y=1
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