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x - y = 30 so substitute x - 15 = 30 Add 15 to both sides x = 45 Your answer should be 45. If you plug in 4, 8, 80, and 200 into the x slot, none of them minus 15 (y) will equal 30.
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x - y = 30 so substitute x - 15 = 30 Add 15 to both sides x = 45 Your answer should be 45. If you plug in 4, 8, 80, and 200 into the x slot, none of them minus 15 (y) will equal 30.