3x-4=5x+6 gives: 2x=-10 which gives x=-5
6 + 2x = 5x + 9 , 6 - 9 = 5x - 2x , -3 = 3x , x = -1
8x-4 = -7+5x 8x-5x = -7+4 3x = -3 x = -1
5x + 4 = 3x - 2Subtract 4 from both sides:5x = 3x - 6Subtract 2x from both sides:2x = 6Divide both sides by 2:x = -3
There are 2 unknowns
5x+y=-7 3x+y=15 8=D
3x - 5 + 3x = 1x + 15 3x + 3x -1x = 15 + 5 5x = 20 5x/5 = 20/5 x = 4
x = 27
2x+3x = 5x
5x = 3x+1000+0 5x-3x = 1000 2x = 1000 x = 500
5X + 6 = 2X + 15 -2X -2X 3X + 6 = 15 -6 -6 3X = 15 ---- ----- 3 3 x = 5 im so smart.
5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
5x+3 = 3x+11 5x-3x = 11-3 2x = 8 x = 4
3x+11+5x=75(add 5x and 3x) 8x+11=75(-11) 8x=64(/ 8) x=8(ANSWER)
5x + 5 = 8 -3x 5x = 3 -3x 8x = 3 x = 0.375
5k
3x+7=5x-13 ----> 3x-5x=-13-7 ----> -2x=-6 -----> x=3