2x - y = 4
4x - 2y=8
please help me :''')

y = 2x - 4

x = R

Step-by-step explanation:

1)

2x - y = 4

-y = -2x + 4

y = 2x - 4

2) to find x

replace y by 2x - 4 in the second equation

4x -2y = 8

4x -2(2x-4) = 8

4x -4x +8 = 8

4x -4x = 8-8

4x -4x = 0

0 = 0 ⇒ any number is possible for x

answer:

step-by-step explanation:

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.