Jerry and Stella are working on an art project together. Jerry has 20 more markers than Stella.
The equation given below shows this relationship, where u represents the number of markers Jerry has, and t represents the number of markers Stella has.
u = t + 20
If Jerry has 57 markers, how many markers does Stella have?
If Jerry has 57 markers, we can substitute u = 57 into the equation u = t + 20:
57 = t + 20
Subtract 20 from both sides:
t = 37
Therefore, Stella has 37 markers.