Sagot :
Answer:-2 is the common difference
Step-by-step explanation:
a+19d=50
a+39d=10
subtract the equations
39d-19d=10-50
20d=-40
d=-2
Answer:-2 is the common difference
Step-by-step explanation:
a+19d=50
a+39d=10
subtract the equations
39d-19d=10-50
20d=-40
d=-2