Question

49x - 57y = 172; 57x - 49y = 252
​

Answer 1

Answer:

HERE IS YOUR ANSWER HOPE IT USEFULL

Answer 2

Step-by-step explanation:

49x - 57y = 172 _(i) 57x - 49y = 252 _(ii)

• ADD (i) & (ii)

106x - 106y = 424

x - y = 4 _(iii)

• SUBTRACT (i) from (ii)

8x + 8y = 80

x + y = 10 _(iv)

• ADD (iii) & (iv)

2x = 14

x = 7

• SUBTRACT (iii) from (iv)

2y = 6

y = 3