5x + 20 = 4x +30 5x - 4x = 30 - 20 x = 10
x = -8, y = 10
4x + 7 = 6x -7 14=2x so x = 7 (plus a negative # is simply - that number)
x + 3x - 10 = 5 - 4 4x - 10 = 1 4x = 1 + 10 x = 11/4
4x =20x=20/4x=5
4x-14
4x + 2 + 2x - 2x = 14 4x = 14 - 2 4x = 12 x = 3
4(6)-10=14
x+10+3x+14=1804x+24=1804x=180-244x=156x=156\4x=39
I am having difficulty understanding your question. 12 + 20 = 10 is obviously false (12 + 20 = 32).If 4x + 14 = 2x + 30, then x must equal 8.
6x + 10 + 4x = 5010x + 10 = 5010x = 40x = 4
4x - 10 = -4x + 22 +4x+10=+4x +10 8x = 32 x = 4
(2, 1)
4x+5 = -9 4x = -9-5 4x = -14 x = -3.5
4x - 10 + 5x = 719x = 81x = 9
4x = -36 x = -9
3x+5= 4x-10+10 +103x+15= 4x-3x -3x15=X