Asked by nabiha
solve the following simultaneous linear equation:
-5x+6y=44
9x+7y=-8
-5x+6y=44
9x+7y=-8
Answers
Answered by
Reiny
first one times 7
-35x + 42y = 308
second by 6
54x + 42y = - 48
subtract them ..
-89x = 356
x = -4
sub back in first
20 + 6y = 44
6y = 24
y = 4
so x= - 4 and y= 4
-35x + 42y = 308
second by 6
54x + 42y = - 48
subtract them ..
-89x = 356
x = -4
sub back in first
20 + 6y = 44
6y = 24
y = 4
so x= - 4 and y= 4
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