Difference AP 4

Calculate the difference of the AP if a1 = 0.5, a2 + a3 = -1.1

Correct answer:

d =  -0.7

Step-by-step explanation:

a1=0.5 a2+a3=1.1 a2 = a1+d a3 = a1+2d 2a1+3d = 1.1 d=(1.12 a1)/3=(1.12 0.5)/3=0.7

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