Solve: 14 = 3y + x; 20 = 2y -3x
Answers
Answered by
1
Answered by
3
Answer:
Arrange the question in a correct form .
x + 3y = 14 ... (1)
-3x + 2y = 20 ... (2)
Now , multiply equation (1) by 2 & equation (2) by 3
2x + 6y = 28 ... (3)
-9x + 6y = 60 ... (4)
From (3) & (4) we get ,
x = -32
11
Substitute x value for equation (1) .
x + 3y = 14
-32 + 3y = 14
11
3y = 14 + 32
11
3y = 154 + 32
11
3y = 186
11
y = 186
33
y = 62
11
Verification
x + 3y = 14
-32 + 3(62/11) = 14
11
-32/11 + 186/11 = 14
-32 + 186 = 14
11
154 = 14
11
14 = 14
LHS = RHS
Similar questions