Respuesta :
Hello from MrBillDoesMath!
Answer:
6
Discussion:
Let the unknown number called "x". Then the question states that
(7x -17) - 10 + 5 = 20 =>
7x + (-17 - 10 + 5) = 20 => as -17 -10 + 5 =-27 +5 = -22
7x -22 = 20 => add 22 to both sides
7x = 20 + 22 => 20 + 22 = 42
7x = 42 => divide both sides by 7
x = 42/7 = 6
Thank you,
MrB
Answer:
You number is 6
Step-by-step explanation:
Let x = number
Multiply me by 7
7x
then subtract 17
7x-17
if you subtract 10
7x - 17-10
7x - 27
then add 5
7x -27 +5
7x -22
you get 20
7x -22= 20
Add 22 to each side
7x -22+22=20+22
7x=42
Divide by 7
7x/7 = 42/7
x =6