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1 vote
How do yo do this question I have to

Solve the System by Substitution:

y = x-2
x + y = 4

2 Answers

8 votes

Answer:

x = 3, y = 1

Explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

( 3 , 1 )

  • Hoped this helped :}
User Cimenmus
by
3.8k points
13 votes

Answer:

x=3

y=1

Explanation:

We know that y is basically two less than x, so we can plug that into the second equation:

x+ (x-2) = 4

We can now simplify:

2x-2=4

2x=6

x=3

After finding x we can now find y with any equation (both work):

y= 3-2

y=1

Hope this helped!

User Karianpour
by
3.8k points