54 POINTS: PLS HELP ASAP !! Solve the following system of equations using the substitution method. 6x + 3y = 15 y = 1 - x A. (3,-4) B. (-3,4) C. (4,-3) D. (-4,3)

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asked Jun 26, 2022 166k views

21 votes

54 POINTS: PLS HELP ASAP !!

Solve the following system of equations using the substitution method.

6x + 3y = 15
y = 1 - x

A. (3,-4)
B. (-3,4)
C. (4,-3)
D. (-4,3)

Mathematics
high-school

Cybran asked

by Cybran

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2 Answers

9 votes

Answer:6x+3-3x

6x-3x= 3x

3x+3=15

-3. -3

3x=12

3. 3

X=4

Explanation:

Simon Belanger answered Jun 27, 2022

by Simon Belanger

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6 votes

You love the y into the why so 1-x will go to y so it’s would be 6x+3(1-x)=15
6x+3-3x
6x-3x= 3x
3x+3=15
-3. -3
3x=12
3. 3
X=4

Lee Kowalkowski answered Jun 30, 2022

by Lee Kowalkowski

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