Question

Solve a + 2d = 600 and a + 6d = 700​

Answer 1

Answer:

a=500

b=25

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Answer 2

Answer:

a+2d=600—— (1)

a+6d=700——(2)

a=600-2d——(from 1)

put value of a in equation 2

600-2d+6d=700

600+4d=700

4d=700-600

4d=100

d=100/4

d=22.5

put value of d in equation 1

a+2(22.5)=600

a+45=600

a=600-45

a=555

put value of a in equation 1

555+2d=600

2d=600-555

2d=45

d=45/2

d=22.5

hence verified

Step-by-step explanation:

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