10x + 13 = 17
10x = 17-13
10x = 4
x = 4/10
x = 0.4
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x2+10x+1 = -12+2x x2+8x+13 = 0 The solution: x = -4 + the square root of 3 or x = -4 - the square root of 3
x2+10x+1 = -12+2x x2+10x-2x+1+12 = 0 x2+8x+13 = 0 Solving by using the quadratic equation formula: x = - 4 - or + the square root of 3
3+3x+7x=13 3x+7x=10 10x=10 x=1
4x +13 = 93-6x. Adding 6x to each side gives: 10x+13 = 93. Subtracting 13 from each side gives: 10x = 80. Dividing both sides by 10 gives: x = 8.
3x - 7 = 5x + 133x - 5x = 13 + 7-2x = 20x = -10x=-3