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Q: 3x-8 plus 5x plus 39 plus 4 x plus 51 equals?

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By including its plus or minus signs

90-39 = 51 degrees

51

2 goes into 102 51 times. (102 divided by 2 equals 51)

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

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120

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The answer to 7 x 6 plus 9 is 51. You have to multiply 7 by 6 which equals 42 and add 9 onto it which equals 51.

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