Question

If x + y equal to 7 and 3 x - 2y = 211 then the value of x will be

Answer 1

Answer:

x = 45

y = -38

Step-by-step explanation:

 x   + y =   7   L1

3x - 2y = 211  L2

x = 7 - y

Remplace in L2

3(7 - y) - 2y = 211

21 - 3y - 2y = 211

-3y - 2y = 211 - 21

-5y = 190

y = 190 / -5

y = -38

x = 7 - y

x = 7 - (-38)

x = 7 + 38

x = 45