Question

What should be added to 3x -y+11 to obtain -y-11

Answer 1

Answer:

Your answer = -29/35

Calculation:

Suppose added value is x

2/5 + x = -3/7

x = -3/7 - 2/5

x = (-15–14)/35 (LCM OF 7 & 5)

x = -29/35

2/5 + (-29/35) = -15/35 = -3/7

Step-by-step explanation:

Answer 2

Step-by-step explanation:

let the w be the added no. to 3x -y+11 to obtain -y-11

now we solve this

3x-y+11 +w =-y-11

3x-y+y+11+11=-w

3x+22=-w

w=-3x-22

therefore -3x-22 should be added to this 3x-y+11 to obtain -y-11