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This equation is unsolvable without knowing one of the values of either x or y.
30-2=28 so 2x=28 28 divided by 2=14, so x is 14
subtraction; 80-y= 52. 28+52 =80
7 + 7 + 7 + 7 = 28
8x + 7 = 5x + 28 subtract 5x and 7 to both sides 3x = 21 divide by 3 to both sides x = 7