the sum of 3 and 2x is 10
The sum of 3 and 2x means we add 2x to 3:
3 + 2x
The word is means an equation, so we set 3 + 2x equal to 10
3 + 2x = 10
The sum of 3 and 2x means we add 2x to 3:
3 + 2x
The word is means an equation, so we set 3 + 2x equal to 10
3 + 2x = 10