X = 10 + y

x - 5y = - 18

The solution of given equations are (17,7).

Step-by-step explanation:

The given equations are

x = 10 + y ... (1)

x - 5 y = - 18 ... (2)

substitute 'x' value in equation (2), we get

10 + y - 5 y = - 18

subtracting '10' on both sides, we get

10 - 4 y - 10 = - 18 - 10

cancelled '10' on left hand side, we get

-4 y = - 28

dividing '4' on both sides and simplification we get

y = 7 ... (3)

substitute the y = 7 in equation (1)

x = 17

the solution of given system is (17,7).

verification:-

put x = 17 and y = 7

x - 5 y = - 18

17 - 5 (7) = - 18

17 - 35 = - 18

-18 = - 18