2x + 5 = 31 2x = 31 - 5 = 26 x = 13
(-3, -5)
If your question was 2X + 5 =10. X equals what? Then X=2.5
(x - 3)(x + 5)
4x - 3 = 2x + 54x - 2x = 5 + 32x = 8x = 8/2x = 4To check:4(4) - 3 = 132(4) + 5 = 13
3x+5 = 2x+13 3x-2x = 13-5 x = 8
2x + 5 = 13 2x = 8 2x/2 = 8/2 x=4
2x + 5 = 31 2x = 31 - 5 = 26 x = 13
4+2x-2x+1=13+6 Combine like terms. (4+1=5; 2x-2x=0; 13+6=19) 5=19 This problem has no solution.
13 + 2x = 32x = 3 - 132x = -10x = -5
2x + y = 5 so y = 5 - 2x; This gives x - 3(5 - 2x) = 13 ie x + 6x = 13 + 15 so x = 4 and y must be -3
(-3, -5)
If your question was 2X + 5 =10. X equals what? Then X=2.5
(x - 3)(x + 5)
4x - 3 = 2x + 54x - 2x = 5 + 32x = 8x = 8/2x = 4To check:4(4) - 3 = 132(4) + 5 = 13
2x-11
-3x + (-18) = 2x + 7 +18 +18 -3x = 2x +25 -2x -2x -5x = 25 ----- ----- -5 -5 x=-5 *------- equals a division line