Yasha thought of a number. He multiplied his number by 7, then subtracted 2. Finally, he divided the result by 4. His final result was 10. What was Yasha’s original number?
[x * 7 - 2] / 4 = 10, solve for x
Cross multiply
[x* 7 - 2] =40
Add 2 to both sides
x * 7 = 42
Divide both sides by 7
x =42 / 7
x = 6
