7x = 5+5x 7x-5x = 5 2x = 5 x = 2.5
Do you mean the following? x2 = 4 - 7x If so, then: x2 + 7x = 4 x2 + 7x + 49/4 = 4 + 49/4 (x + 7/2)2 = 65/4 x + 7/2 = ±√65 / 2 x = (-7 ± √65) / 2 So x is equal to (-7 - √65) / 2 and (-7 + √65) / 2
x=6
7x + 4 = 2x + 5Subtract 4 from each side of the equation:7x = 2x + 1Subtract 2x from each side:5x = 1Divide each side by 5:x = 1/5 = 0.2
The Y intercept of y=7x+10 is 10.
65 = 2x - 7x 65 = -5x 65/-5 = -5x/-5 -13 = x
-7x + 5 = -9 -7x = -14 7x = 14 x = 2
7x = 5+5x 7x-5x = 5 2x = 5 x = 2.5
If x=2, then 7x = 14 and if y=5 then 4y=20.
23 = 7x + 7x - 5 = 14x - 5 14x = 23 + 5 = 28 x = 28/14 = 2
7x is still the slope, no matter what x equals.
4x+5=7x-8 the ansewr is 3.25
-9-7x=-5 express first the equation in terms of x, where, 7x=-9+5 then, 7x=-4 thus, x=-4/7
Let x be the varible: 7x-5 = 37 7x = 37+5 7x = 42 x = 6
7x - 9 = 3x + 5 7x - 3x - 9 = 5 7x - 3x = 5 + 9 4x = 14 x = 14/4
7x+5-14 = 28 7x = 28+14-5 7x = 37 x = 37/7 = 5.'285714' recurring
-4x=10 and -7x is 65? -4x=10 therefore 4x is -10, x = -2.5 -7x = 65, 7x = -65, x = -9.26