2x+7y-5=0;-3x+8y=-1,solve the following equation by elimination method
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ANSWER:
- Value of x is 47/37 and y is 13/37.
GIVEN:
- 2x+7y-5 = 0
- -3x+8y= -1
TO FIND:
- Value of'x' and 'y'.
SOLUTION:
=> 2x+7y = 5. ....(i)
Multiplying eq(i) by 3 we get;
=> 3(2x+7y) = 5*3
=> 6x+21y = 15. .....(ii)
=> -3x+8y = (-1)
Multiplying both sides by 2 we get;
=> 2(-3x+8y) = (-1*2)
=> -6x+16y = -2 .....(iii)
Adding eq (ii) and (iii) we get;
=> 6x+21y-6x+16y = 15+(-2)
=> 37y = 13
=> y = 13/37
Putting y= 13/37 in eq(I) we get;
=> 2x+7(13/37) = 5
=> 2x = 5-91/37
=> 2x = (185-91)/37
=> 2x = 94/37
=> x = 47/37
Value of x is 47/37 and y is 13/37.
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