If you mean: 7x-2 = 5x+16 then the value of x works out as 9
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5x + 17 = 7x - 123 123 + 17 = 7x - 5x 140 = 2x x = 140 ÷ 2 x = 70
If you mean: 5x(3x+2)-8x-7x then the expression can be simplified to 15x^2 -5x
The answer to the math problem of 5x plus 7x-4x 6 is -12.
7X-1=9+5X. add 1 to both sides 7X=10+5X. Subtract 5X and get 2X=10 divide by 2 and x=5
7x + 8 = 5x + 327x = 5x + 242x = 24x = 12hope this helps