40
6x-20 = 8x 6x-8x = 20 -2x = 20 x = -10
2x - 10 =30 2x -10 = 30 +10 +10 2x = 40 /2 /2 x = 20
x = 15
2x to the fourth power minus 162 equals -146
2x+a=p 2x=p-a x=.5p-.5a
what is the solution of x-5y=10 and 2x-10y=20
-2x+14=20 -2x=20-14 -2x=6 -2x/-2=6/-2 x=-3
2x squared minus 5x minus 3 factored is (2x+1)(x-3).
6 - 3x = 4 - 2x 6 = x + 4 x = 2 Check it. 6 - 6 = 4 - 4 It checks.
6x-20 = 8x 6x-8x = 20 -2x = 20 x = -10
Better formatting is cos(2x+20)=-0.5
2x - 10 =30 2x -10 = 30 +10 +10 2x = 40 /2 /2 x = 20
You fill in for x and solve the equation3(5)^2 - 2(5)15^2 - 10; now solve
x = 15
2x to the fourth power minus 162 equals -146
6x-8+2x-5 = 7-2x 6x+2x+2x = 7+8+5 10x = 20 x = 20/10 x = 2
2x+a=p 2x=p-a x=.5p-.5a