3x - 7 = 5x + 13
3x - 5x = 13 + 7
-2x = 20
x = -10
x=-3
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5x+49 = 8x+13 49-13 = 8x-5x 36 = 3x x = 12
If 5x plus 3y equals 13, the x equals 2 and y equals 1. This is because 5x2=10 and 3x1=3, and 10+3=13.
8(1+5x) +5 = 13+5x => 8+40x + 5 = 13 +5x => 13+40x = 13+5x => 13-13+40x = 13-13+5x => 40x = 5x => 40x - 5x = 0 => 35x = 0 => 35x/35 = 0/35 => x = 0
3x+7=5x-13 ----> 3x-5x=-13-7 ----> -2x=-6 -----> x=3
3x - 7 = 5x + 13-2x = 20x = -10