Question

Solve the equations:-
x+y= 10
x-y= 4.

Answer 1

Answer:

x + y = 10

=> x = 10 - y

x - y = 4

=> 10 - y - y = 4

=> 10 - 2y = 4

=> - 2y = 4 - 10

=> - 2y = -6

=> y = -6 ÷ -2

=> y = 3

x + y = 10

=> x + 3 = 10

=> x = 10 - 3

=> x = 7