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If 4x - 2x + 4 = 10, the solution is 2x + 4 = 10 and x = 3.
-2x + 4 < 10 -4 -4 --------------------- -2x < 10 --- ---- (divide) -2x -2x ---------------- -x > -5 (switch the sign when you divide by a negative) Hope that helps :)
2X - 4 = - 10 add 4 to each side 2X - 4 + 4 = - 10 + 4 2X = - 6 divide each side by 2 X = - 3 check in original equation 2(-3) - 4 = - 10 - 6 - 4 = - 10 - 10 = - 10 checks
-2x - 10 + 4 = 2 -2x - 6 = 2 -2x = 2 + 6 -2x = 8 -x = 8 / 2 x = -4 Check: -2(-4) - 10 + 4 = 2 8 - 10 + 4 = 2 8 - 6 = 2 2 = 2
2x - 10 =30 2x -10 = 30 +10 +10 2x = 40 /2 /2 x = 20