2x increased by 3 times a number
The phrase a number means an arbitary variable, let's call it x.
3 times a number means we multiply x by 3:
3x
The phrase increased by means we add 3x to 2x:
2x + 3x
Simplifying, we get:
5x
The phrase a number means an arbitary variable, let's call it x.
3 times a number means we multiply x by 3:
3x
The phrase increased by means we add 3x to 2x:
2x + 3x
Simplifying, we get:
5x