1.

49x - 57y = 172; 57x - 49y = 252​

Answer»

Answer:

49x - 57Y = 172

57x - 49y = 252

49x = 172 + 57y

x = 172+57y/48 ....................(1)

57 * 172+57y / 48 - 49y = 252

19*172+57y/16 -49y =252

3268+1083y/16 -49y = 252

3268+1083y - 784y/16=252

3268+299y = 252 * 16

3268 + 299y = 4032

299y = 4032-3268

299y= 764

y = 764/299

y= 2.5

put VALUE of y in EQUATION (1)

x= 172 + 57(2.5)/48

x= 146



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