Question

5x+7y=12 and 10x+14y=20 by substitution method​

Answer 1

Answer:

y=0 and x=12/5

Step-by-step explanation:

5x+7y=12

x=12-7y/5.......(1)

10x+14y=20......(2)

Substituting (1) in (2)

10(12-7y/5)+14y=20

2(12-7y)+14y=20

24-14y+14y=20

-14y+14y=20-24

-(14y-14y)=-4

14y-14y=4

y=0x=

Now substitute the value of y in (1)

x=12-7y/5

=12-7×0/5

=12-0/5

x=12/5

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Answer 2

Answer:

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