18.
3 x 18 = 54
54 - 5 =49
You said20 - 3x = 4 + x.Add 3x to each side of the equation:20 = 4 + 4xSubtract 4 from each side:16 = 4xDivide each side by 4 :4 = x
The number is 3
4
18 is a solution to the equation 4 plus 7 times a number where the result is 9 times that number.
45 times
7N - 4N = 24
157
The number is 5.
4
The number you are referring to is 6.
-11
Let the number be x:- If: 7x -22 = 125 Then: x = 21
141+20=161, 161/7=23. The answer is 23. It is algebra
The number is 8.... 7 x 8 = 56.... 2 x 8 = 16... 56 - 16 = 40
If the number, x, has 10 subtracted from twice it to make 28, then x must be 19. 2x - 10 = 28 2x = 38 x = 19
7x - 25 = 15 7x = 40 x = 40/7 or 5 and 5/7
You said that " 7x - 4x = 30 ".From only that much information, I can see that 3x must be 30,which leads me directly to the realization that 'x' is 10 .