3 years ago

Solve the system using substitution. 3x - 4y = 11 y + 3x = 1

Mathematics

2 answers:

Dmitry [639]3 years ago

5 0

Answer:

x= 1

y= -2

Step-by-step explanation:

1. y+3x=1 subtract 3x from both side to get y= 1-3x

2. Put the new found y value in the equation

3x-4(1-3x)=11

3. Distribute the 4

3x-4+12x=11

4. Add 4 to both sides

3x+12x=15

5. Add the x's

15x=15

6. Solve for x

x=1

7. Plug in the x in the y equation y= 1-3x

y=1-3(1)

8. Solve for y

y= -2

NISA [10]3 years ago

3 0

Answer:

i not speak english

Step-by-step explanation:

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