Question

3x - 7y + 10 = 20 second equation - 2 X + Y - 3 equals to zero find the answer by elimination method

Answer 1

Answer:

3x-7y+10=20

3x+7y=20-10

3x+7y=10

3x=10-7y

x=10-7y/3

putting x=10-7y/3 in equation 2

-2*(10-7y/3) +y-3=0

-20+14y/3+y-3=0

-20+14y+3y-3/3=0

-23+17y/3=0

-23+17y=0

17y=23

y=23/17

from equation 1

3x-7y+10=20

3x-7*23/17=10

3x+161/17=10

3x=10-161/17

3x=11/17

x=11/51

Answer 2

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