Home
Class 9
MATHS
Examine why they work ? Choose a numbe...

Examine why they work ?
Choose a number. Double it. Add nine. Add your original number. Divide by three. Add four. Subtract your original number. Your result is seven.

Text Solution

Verified by Experts

The correct Answer is:
Let your original number be n. Then we are doing the following operations: `n to 2n to 2 +9 to + n = 3n + 9 to (3n+9)/3 = n + 3 to n + 3 + 4 = n+ 7 to n + 7 - n=7`
Promotional Banner

Similar Questions

Explore conceptually related problems

Add without using number line : 10 +(-3)

Add without using number line : (-8) + (+8)

Add without using number line. -10 + (+16)

Add without using number line: -10 + (+16)

Add without using number line : 17 + (-11)

Add without using number line: (-8) + (+8)

Add without using number line: -68+(39)

Add without using number line: 36+(-14)

Add without using number line: -215 +(-100)