2x-8 * 0.9 = 2.4

2x-8 * 0.9 = 2.4

2X-8*0.9=2.4
2X=2.4+7.2
X=4.8

Solution equation: (X-6) (X-9) - (X-7) (x-1) = 7 (2x + 5)
The answer is x = 7 / 4,

Square of x-6x-9x + 54 - (square of x-x-7x + 7) = 14x + 35
-15x+54+8x-7=14x+35
21x=12
x=4/7

The solution equation x △ 12 = 34 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; x-27x = 114 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 45 + 12x = 910

（1）x÷12=34      x÷12×12=34×12            x=38；（2）x-27x=114        57x=1...

Please help to solve the equation 100x + 10 × 2x + (x + 5) - 2x = 243 1500x = 1200 (9-x)

100x + 10 × 2x + (x + 5) - 2x = 243100x + 20x + X + 5-2x = 243119x = 243-5119x = 238x = 21500x = 1200 (9-x) 1500x = 10800-1200x1500x + 1200X = 108002700x = 10800x = 4 if you don't understand this question, please click "select as satisfactory answer" if you are satisfied