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OpenStudy (anonymous):
2x/7+x/4=3
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OpenStudy (texaschic101):
2x/7 + x/4 = 3 (multiply the equation by 28) (28)2x/7 + (28)x/4 = (28)3 8x + 7x = 84 15x = 84 x = 84/15 x = 5.6 check... (2(5.6))/7 + (5.6)/4 = 3 11.2/7 + 5.6/4 = 3 (common denominator is 28) 44.8/28 + 39.2/28 = 3 84/28 = 3 3 = 3 (correct) ANSWER : x = 5.6
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