11x - 21 = 7x + 3 4x = 24x = 6
X2+11x+11 = 7x+9 X2+11x-7x+11-9 = 0 x2+4x+2 = 0 Solve as a quadratic equation by using the quadratic equation formula or by completing the square: x = -2 + or - the square root of 2
4y + 3w + 4x + 9y + 7x - 7w (combine like terms)-4w + 11x + 13y
7x+y=6
-7x - 2y = -3
7x + 8 = 11x + 3, solve for xsubtract 7x from both sides8 = 11x - 7x + 38 = 5x + 3subtract 3 from both sides5 = 5xdivide both sides by 51 = x.
11x - 21 = 7x + 3 4x = 24x = 6
If: 11x+25 = 7x+15 then there is only one solution and it is x = -2.5
11x+9=7x+21 11x-7x=4 4x+9=21 21-9=12 4x=12 12 divided by 4= 3 x=3
It is a linear equation in a single variable, x.
x=3 actually its 7
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.
4x + 6 = -82 - 7X add 7X to each side 4X + 7X + 6 = -82 -7X + 7X 11X + 6 = -82 subtract 6 from each side 11X + 6 - 6 = -82 - 6 11X = -88 divide both sides by 11 X = -8 check in original equation 4(-8) + 6 = -82 - 7(-8) -32 + 6 = -82 + 56 -26 = -26 checks
X2+11x+11 = 7x+9 X2+11x-7x+11-9 = 0 x2+4x+2 = 0 Solve as a quadratic equation by using the quadratic equation formula or by completing the square: x = -2 + or - the square root of 2
x=4 x=0
x=3
4x + 8 + 7x + 12 = 11x + 20