1.

Solve for x and yplease urgent​

Answer»

Step-by-step explanation:

47x + 31y = 63___________(i)

31x + 47y = 15___________(ii)

ADD EQUATION (i) and (ii), we GET

78x + 78y = 78

78(x + y) = 78

x + y = 1_________(iii)

Subtract equation (i) and (ii), we get

16x - 16y = 48

16(x - y) = 48

x - y = 3__________(iv)

Subtract equation (iii) and (iv), we get

2x = 4

x = 2

Put the value of x equation (i)

x + y = 1

2 + y = 1

y = 1 - 2

y = -1

HOPE it's help you..:-):-)


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