Answer:
3 3/7
Explanation:
7x+2v=48
2v. -2
-------
46
7x+46=48
-46. -46
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7x=2/7. x=2/7=1/7
x=1/7
x = 6
7x+2y =48 when y =3
Substitute for y in the equation.
7x + 2(3) = 48
7x + 6 = 48
7x = 48 - 6
7x = 42
x = 42/7
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