Add 5 to me. Then divide by 7. If you add 12 and the subtract 7, you get 10

Answer: 30

Step-by-step explanation:

Let the number be y

Add 5 to me

Y+5 ... equ1

Divide by 7

Y+5/7

Add 12

Y+5/7+12

Subtract 7

(Y+5) / 7 + (12-7) = 10

12-7=5

Substitute

(Y+5) / 7+5=10

Find the lowest common multiple

((Y+5) + 7 (5)) / 7=10

(Y+5) + 35) / 7=10

Cross multiply

Y+5+35=70

Y+40=70

Y=70-40

Y=30

The unknown number is 30