Question

If 10 -x is 5 more than 15, what is the value of 3x?​

Answer 1

Given that

10 + x is 5 more than 10

Formally, we can express this

10 + x = 10 + 5

⇒x = 15 − 10

⇒x = 5

To find 2x,

2x = 2 × x

= 2 × 5

= 10

Therefore, the value of ′2x′ is ′10′.