11X - 23 = 7X + 5
subtract 7X from both sides
11X - 7X - 23 = 7X - 7X + 5
4X - 23 = 5
add 23 to both sides
4X - 23 + 23 = 5 + 23
4X = 28
divide both sides integers by 4
(4/4)X = 28/4
X = 7
--------------------check in original equation
11(7) - 23 = 7(7) + 5
77 - 23 = 49 + 5
54 = 54
checks
7
7x + 12 = 5x + 2 Subtract '12' from both sides Hence 7x = 5x -10 Subtract '5x' from both sides. 2x = -10 Divide both sides by '2' Hence x = -5 .
If: 4x+3x = 35Then: 7x = 35So: x = 35/7 => x = 5
10x + 5 = 5(2x + 1)
x2 - 7x = 60 x2 - 7x - 60 = 0 (x - 12) (x + 5) = 0 x = 12 or x = -5
-7x + 5 = -9 -7x = -14 7x = 14 x = 2
7x = 5+5x 7x-5x = 5 2x = 5 x = 2.5
7x is still the slope, no matter what x equals.
4x+5=7x-8 the ansewr is 3.25
23 = 7x + 7x - 5 = 14x - 5 14x = 23 + 5 = 28 x = 28/14 = 2
4x - 7 = 5 + 7x x = -4
x = 8
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
10x + 5 which is also equal to 5(2x + 1)
X=2