Question

Solve by substitution method 3x+4y=10
2x-2y=2

Answer 1

Question :

Solve by substitution method 3x + 4y = 10  and 2x - 2y = 2

Explanation :

The substitution method is one method for determining the completion of a two-variable linear equation system (SPLDV). To determine this completion, we must declare a variable into another variable, then the value of the variable is substituted to the same variable

Answer :

The formula looks for x

That is :

3x + 4y = 10          ⇒ x 1

2x - 2y = 2            ⇒ x 2

3x + 4y = 10

4x - 4y  =  4

-----------------   -

-x = 6

x = -6

The formula looks for y

That is :

3x + 4y = 10

3. -6 + 4y = 10

-18 + 4y = 10

4y = 10 + 18

4y = 28

 y = 28/4

 y = 7

I hope this helps °ω°

Answer 2

Answer:

Step-by-step explanation:

3x+4y=10

3x=10-4y

x=10-4y/3

substitite in 2x-2y=2

x-y=1

(10-4y)/3-y=1

10-4y-3y=3

7=7y

y=1

x=2