5X = 75
divide both sides integers by 5
(5/5)X = 75/5
X = 15
----------------check
5(15) = 75
75 = 75
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3x+11+5x=75(add 5x and 3x) 8x+11=75(-11) 8x=64(/ 8) x=8(ANSWER)
4x-7=5x-2 x=-5
5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
If: 5x = 4x+7 Then: 5x-4x = 7 And: x = 7
5x+3y = 51 y = 10x-8 Substituting the bottom equation into the top equation: 5x+3(10x-8) = 51 5x+30x-24 = 51 5x+30x = 51+24 35x = 75 Divide both sides by 35 to find the value of x: x = 75/35 = 15/7 in its lowest terms. Substitute the value of x into the original equations to find the value of y: So: x = 15/7 and y = 94/7