Question

MEDALS FOR WHO SOLVES THE EQUATIONS!
Graphing or substituting for a linear systems of equations.

y=5-3x
x-y=7
Answer: (3,-4)
How do you solve to get the answer. Show work

Answer 1

use substitutions. plug the first equation into teh second such that you have

x-(5-3x)=7
then solve for x

Answer 2

y=3

Answer 3

x-(5-3x)=7
then solve for x i was going to say that

Answer 4

you mean *x=3

now plug this value of x into any one of the 2 equations to solve for y

Answer 5

\(\bf {\color{red}{ y}}=5-3x\\ \quad \\
x-{\color{red}{ y}}=7 \implies x-({\color{red}{ 5-3x}})=7\) <--- substitution, thus

Answer 6

Yes I do mean x.

Answer 7

can you gimme one medal too

Answer 8

so... you can either
plug into the first equation

y=5-3(3)

OR
the second

3-y=7

and solve for y

Answer 9

y=-4

Answer 10

you got it

Answer 11

okey dokey. done..

Answer 12

thanks cassieblake

Answer 13

:) no problem. Now it is far.