Answer:
30
Step-by-step explanation:
work in reverse:
10+7=17
17-12=5
5×7=35
35-5=30
Answer:
x = 30/7
Step-by-step explanation:
Unknown number = x
Write an equation
x + 5 ÷ 7 + 12 - 7 = 10
Simplify
x + 5/7 + 12 - 7 = 10
x + 5/7 + 5 = 10
x + 5/7 = 5
x = 30/7
Hope this helps :)
