U can subtract 18 from each side of the equation.
25-7=18 18/3=6
Do you mean: 5x + 9 - 7x + 6 = x - 18 If so, you can solve this question at this manner: -2x + 15 = x - 18 3x = -3 x = -1
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Solve this system of equations. 5x+3y+z=-29 x-3y+2z=23 14x-2y+3z=-18 Write the solution as an ordered triple.
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y + y + 2 = 182y + 2 = 182y = 16y = 8whew !
That equation has no solution. There is no possible number that's equal to 18 more than itself.
a + 18 = 90 is a linear equation in one variable. Adding both sides by -18, we get a + 18 - 18 = 90 - 18 a = 90 - 18 = 72
x = -1 Since -3(-1) + 15 = 18
11x = 20x +1811x-20x=18x(11-20)=18-9x=18x=-2
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