3x + 5 = 6x + 23 -3x = 18 x = -6
3x-5+2x=-49 is the same as 5x=-44 or x=-44/5
8 + 3 x 5 = 23
5
3 plus 4 x plus 5 31 when simplified would give x = 23/4.
2x + 2 + 5x = 23 2x +5x = 23 -2 7x = 21 X = 3
x = 2
11X - 23 = 7X + 5 subtract 7X from both sides 11X - 7X - 23 = 7X - 7X + 5 4X - 23 = 5 add 23 to both sides 4X - 23 + 23 = 5 + 23 4X = 28 divide both sides integers by 4 (4/4)X = 28/4 X = 7 --------------------check in original equation 11(7) - 23 = 7(7) + 5 77 - 23 = 49 + 5 54 = 54 checks
5(8) + 9 = 49.
Let the number is x So, X+20=69 X=69-20 X=49 THE NUMBER IS 49 SO, 49 plus 20 equal to 69 .•.
x=7
2x2 + 21x + 49 = (2x + 7)(x + 7)