8n - 15 = 57 (add 15 to both sides)
8n - 15 + 15 = 57 + 15
8n = 72 (divide both sides by 8)
8n/8 = 72/8
n = 9
157
Let the number be x:- If: 7x -22 = 125 Then: x = 21
81.
141+20=161, 161/7=23. The answer is 23. It is algebra
*A+ answer is 4 .:Sandy:.
157
Let the number be x:- If: 7x -22 = 125 Then: x = 21
81.
141+20=161, 161/7=23. The answer is 23. It is algebra
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
*A+ answer is 4 .:Sandy:.
7N - 4N = 24
The answer is 23 itself 23 + 23 + 23 = 69 = 23 x 3 then 69 - 23 = 46
25-5x=85 -25 -25 -5x=60 60/-5=-12 x=-12
The number is 5.
Let the number be x:- x-(25*4) = 63 x-100 = 63 x = 63+100 x = 163