Solve for x and y , 152x-378y= -74 and -378+152y= -604
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152x - 378y= -74 ----> [ 1 ]
-378x+152y = -604 ----> [ 2 ]
Adding equation 1 and 2
====>
-226x + -226y = -678
x + y = 3 -----> [3]
Now ,
Subtracting equation 1 from 2 ,
-530x + 530y = -530
530y - 530 x = -530
x - y = 1 ----> [ 4 ]
Adding equation 3 and 4
2x = 4
x = 4/2
x = 2
Lets put this value of x in equation 3
2 + y = 3
y = 3 - 2
y = 1
-378x+152y = -604 ----> [ 2 ]
Adding equation 1 and 2
====>
-226x + -226y = -678
x + y = 3 -----> [3]
Now ,
Subtracting equation 1 from 2 ,
-530x + 530y = -530
530y - 530 x = -530
x - y = 1 ----> [ 4 ]
Adding equation 3 and 4
2x = 4
x = 4/2
x = 2
Lets put this value of x in equation 3
2 + y = 3
y = 3 - 2
y = 1
Answers
Answered by
1
1st question y and x =189/76y+-37/76
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Answered by
3
multiply both sides by 189
152x-378y=-74
28728x-71442y= -13986.........................1
Multiply both sides of the given equation by 76
-378x+152y=-604
-28728x+11552y= -45904..............2
add equation 1 and 2
-59890y = -59890
y=1
put y=1 in equation 1
152x-378y=-74
152x-378(1)= -74
152x= 378-74
152x = 304
x= 2
(2,1) is the solution of the given simultaneous equation
152x-378y=-74
28728x-71442y= -13986.........................1
Multiply both sides of the given equation by 76
-378x+152y=-604
-28728x+11552y= -45904..............2
add equation 1 and 2
-59890y = -59890
y=1
put y=1 in equation 1
152x-378y=-74
152x-378(1)= -74
152x= 378-74
152x = 304
x= 2
(2,1) is the solution of the given simultaneous equation
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