Question

37 X + 43 Y = 123 and 43 X + 37 y = 117​

Answer 1

37x+ 43y=123.....eq1

43x+37y=117......eq2

add eq 1 and 2

37x+43y=123

43x+37y=117

_______________

80x+80y=240......

(÷by80)

x+y=3........eq3

sub eq 2 and 1

37x+43y=123

43x+37y=117

-_______________

-6x+6y=6

(÷by-6)

x-y=-1.....eq4

add eq 3 and 4
x+y=3
x-y=1
_______
2x=4
x=2

put x=2 in eq3
x+y=3
2+y=3
y=3-2
y=1

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