Question

Elimination method of 3×-y=40
4×-2y=50

Answer 1

Answer:

x = 15 ;   y =5

Step-by-step explanation:

3x - y = 40

4x - 2y = 50

Now lets find y first

3x - 40 = y

Now lets substitute them in the second equation:

4x - 2(3x - 40) = 50

4x - 6x + 80 = 50

-2x = -30

2x = 30

x = 15

Now lets find y

3x - 40 =y

(3 × 15) - 40 = y

45 - 40 = y

5 = y