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8
you just equal that equation to 0, then you solve for x 5x-8=0 5x=8 x=8/5
5x - 8 = 717 5x = 725 x = 725/5 x = 145
5x+2y>8, y≤4 5x+2(4)>8 5x+8>8 5x>0 x>0
5x-8 = x+125x-x = 8+124x = 20x=5
x2-5x = 24 x2-5x-24 = 0 (x-8)(x+3) = 0 x = 8 or x -3
If 3x + 5x = -8, what is x + 1? 3x + 5x = -8 8x = -8 x = -1 x + 1 = -1 + 1 = 0
When x equals 8, the value of 5x would be 5 times 8, which is 40.
32-5x=3x+8 32-5x-8=3x+8-8 24-5x=3x 24-5x+5x=3x+5x 24=8x x=24/8=3
X2 - 5X = 24 X2 - 5X - 24 = 0 (X - 8)(X + 3) X = 8 ----------------and X = - 3 --------------
5x-8 + 7x 12x-8 12x = 8 x = 8/12 x= 2/3
X=10 how to get it: 5x-8=42 <--- add 8 to each side this will cancle out -8 leaving you with 5x=50 5x=50 <------ divide each side by 5, this will cancel out 5 and leaves x=10 x= 10