3 years ago

Solve the system of equations by substitution.3x+2y=10 y=3x-4x= y=

Mathematics

1 answer:

AfilCa [17]3 years ago

4 0

Answer:

x=2; y=2

Step-by-step explanation:

3x+2y=10

y=3x-4

We can substitute y from the first equation with the second equation:

3x+2(3x-4)=10

3x+6x-8=10

9x=18

x=2

Now plug this in to any of the equations (i used second equation):

y=3(2)-4

y=6-4

y=2

Check your answers:

y=3x-4

2=3(2)-4

2=6-4

2=2

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