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If 18, a, (b-3) are in A.P. then find the value of 20-b. |
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Answer» 35 - 2A Step-by-step explanation: GIVEN:- 18, a, (b-3) are in A.P. then, As the common difference is CONSTANT, we can write a-18 = (b-3) - a 2a = b + 15 2a - b = 15 15 - 2a = -b By adding 20 on both sides we get, 35 - 2a = 20 - b So the answer is 35 - 2a |
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