3 years ago

Solve the system of linear equations by substitution.

Mathematics

2 answers:

natali 33 [55]3 years ago

8 0

Plug in -x+9 in for y and you should get (2,7)

Goryan [66]3 years ago

6 0

Answer:

hey! This was the only part of mathematics I ever enjoyed! So consider this both of our lucky days: Answer is : (2,7)

Step-by-step explanation:

basically plug in Y to the first equation as sox + 4(-x + 9) = 30

x - 4x + 36 = 30- 3x = - 6

x = 2

then plug that in to Y!

Y = -(2) + 9

so Y = 7

and our answer is : (2,7)

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