Question

solve the following in linear equation.

57x - 56y = -169
56x - 57y = -170
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Answer 1

Answer:

use desmos calculator or ask google

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Adding eq 1 and 2

57x-56y = -169 _____( 1 )

56x-57y =-170______(2)

____________

113x -113y = -339

dividing each term by 113

x-y= -3 ________(3)

Now,subracting equation 2 from 1

57x-56y= -169

56y-57y= -170

______________

x+y = 1 ______(4)

Adding equation 3 and 4

x-y = -3 ___ (3 )

x+y = 1 _____(4)

_______

2x = -2

x= -2 /2

x= -1

put x= -1 in eqn 4

x+y =1

-1 +y =1

y = 1+1

y = 2

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Solution is x = -1 and y = 2

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