Question

if x+y=18and x-y=2 find the value of x and y

Answer 1

hi dear

x + y =18-------------------1eqn
x - y. =2 ------------2eqn
___________
2x = 20

x=20/2

x = 10

put the value of x

x + y=18

10+y=18

y=8

hope it will help u

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Answer 2

Hlooo....
Here's ur answer
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x + y = 18____________(1)

x- y = 2 _____________(2)

Solve equation (1) and (2)

From eq. (1)

x = 18 - y_________

put the vaule of eq 3 in 1

(18-y) - y = 2
-2y = 2 - 18
- 2y = -16
y = 8

Put the value of y in eq 3

x = 18 - (8)
x = 10

So that the value of x is 10 and the value of y is 8

_________
Glad to help