Question

3x-5y=20 6x-10y=20 by cross multiplication method​

Answer 1

3x - 5y = 20 and 6x - 10y =40

x = 20 + 5y /3 .............1

6x - 10y = 40

now put .........1 in 6x - 10y = 40

6(20+5y/3) - 10y =40

2(20+5y) - 10y = 40

40+10y - 10y =40

40 = 40

0

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