Write the sentence as an equation. 19 is equal to c less than 321
c less than 321:
321 - c
The phrase is equal to means an equation, so we set 321 - c equal to 19:
321 - c = 19
c less than 321:
321 - c
The phrase is equal to means an equation, so we set 321 - c equal to 19:
321 - c = 19