solve by substitution method
X+y=18, x-y=4
Answers
Answered by
13
Answer:-
⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
• Given:-
- x + y = 18
- x - y = 4
⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
• To Find:-
- Value of x and y.
⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
• Solution:-
✴
✴
⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
• Taking eqn.[i]:-
➪
➪
⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
• Substituting eqn.[iii] in eqn.[ii]:-
➪
➪
➪
➪
➪
➪
➪
★
⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
• Substituting value of y in eqn.[i]:-
➪
➪
➪
★
⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Therefore, value of x = 11 and y = 7.
Answered by
41
Explanation:
Given :
X+y=18.......(1)
and x-y=4........(2)
To Find :
x and y values
______________________________________________
From Equation(1)
We find substitute for x and put into Equation2
Put X's value into Equation2
Now ,put Y's value into Equation1
Check:-
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