An algebra problem by Vaibhav Kandwal

Algebra Level 1

If 4 is added to a number and the sum is tripled, the result is 18 more than the number. What is the number?


The answer is 3.

Vaibhav Kandwal by Vaibhav Kandwal , 21, India

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

2 solutions

( 4 + x ) ( 3 ) = 18 + x (4+x)(3)=18+x

12 + 3 x = 18 + x 12+3x=18+x

3 x − x = 18 − 12 3x-x=18-12

2 x = 6 2x=6

x = 3 \color{#D61F06}\boxed{x=3}

1 Helpful 0 Interesting 0 Brilliant 0 Confused

Correct! :D

Vaibhav Kandwal - 3 years, 8 months ago
Vaibhav Kandwal
Feb 21, 2015

Assume the number is x.

( 4 + x ) × 3 = 18 + x (4+x)\times3 = 18+x

12 + 3 x = 18 + x 12+3x = 18 + x

2 x = 6 2x = 6

x = 3 x=\boxed{3}

1 Helpful 0 Interesting 0 Brilliant 0 Confused

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...