Question

42y-4x=10,3x-2y=1 solve by substitution method​

Answer 1

Answer:

42y -4x =10

y = 10+4x/42 - - - - (1)

3x -2y =1

3x - 2(10+4x)/42 = 1

3x -10-4x /21 = 1

53-4x /21 = 1

53-4x = 21

-4x = 21-53

-4x = -32

x = 32/4=8

y = 10+4x / 42 = 10+ 4(8)/42= 10+32/42 = 42/42 = 1

•°•x=8, y = 1