12. If x= 20 - b, y = a +5b, then calculate the following: a 2x+3y b. – InterviewSolution

1.	12. If x= 20 - b, y = a +5b, then calculate the following: a 2x+3y b. 4x - 5y
Answer» y= 2(20 - b) + 3(a + 5B)= 40 - 2b + 3a + 15b= 3a + 13b + 40 (ans.)2. 4X - 5y= 4(20 - b) + 5(a + 5b)= 80 - 4b + 5a + 25b= 5a - 4b + 80 (ans.)

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