x2+11x+11 = 7x+9 x2+11x-7x+11-9 = 0 x2+4x+2 = 0 The above quadratic equation can be solved by using the quadratic equation formula and it will have two solutions.
7x + 8 = 10x - 2 ∴ 3x = 10 ∴ x = 10/3
Add 4x - 2 to each side: 5x = 5 x = 1
The equation 4x + 5 = 2 has the solution 4x = -3 and x = - 3/4 (minus 3/4).
4x+3y = 6 3y = -4x+6 y = -4/3x+2 in slope intercept form
4x+9 = 7x+3 4x-7x = 3-9 -3x = -6 x = 2
7x - 2 = 4x + 9 3x - 2 = 9 3x = 11 x = 11/3
(2, 1)
3x+4-7x=5-4x+2 -4x+4=7-4x Adding 4x to each side yields: 4=7, which is not true, so there is no answer (a null set)
4x + y = 9 so that y = 9 - 4x 7x - 8y = 6 7x - 8*(9-4x) = 6 7x - 72 + 32x = 6 39x = 78 x = 2 Then y = 9 - 4x = 9-4*2 = 9-8 = 1
11x + 2 = 26 + 7x Subtract 7x from both sides: 4x + 2 = 26 Subtract 2 from both sides: 4x = 24 Divide both sides by 4: x = 6
3x + (-2 + 4x) = -2 + 7x
-3x + 2 = -7x - 22 add 7x to both sides 4x + 2 = -22 subtract 2 from both sides 4x = -24 divide by 4 x = -6 ■
-3x + 2 = -7x - 22 add 7x to both sides 4x + 2 = -22 subtract 2 from both sides 4x = -24 divide by 4 x = -6
7x+2 = 3x-2 7x-3x = -2-2 4x = -4 x = -1
4x + 7 = 7x + 1Subtract 4x from each side:7 = 3x + 1Subtract 1 from each side:6 = 3xDivide each side by 3:2 = x
The equation can be solved by isolating the variables from the numbers. The answer would be 4x = 8, which equals 2.