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jolli1 [7]
2 years ago
11

I need help pls WILL GIVE BRAINLIEST

Mathematics
2 answers:
irakobra [83]2 years ago
6 0

Answer:

(3, - 2 )

Step-by-step explanation:

- 3x - 7y = 5 → (1)

15x + 6y = 33 → (2)

multiplying (1) by 5 and adding to (2) will eliminate x

- 15x - 35y = 25 → (3)

add (2) and (3) term by term to eliminate x

0 - 29y = 58

- 29y = 58 ( divide both sides by - 29 )

y = - 2

substitute y = - 2 into either of the 2 equations and solve for x

substituting into (2)

15x + 6(- 2) = 33

15x - 12 = 33 ( add 12 to both sides )

15x = 45 ( divide both sides by 15 )

x = 3

solution is (3, - 2 )

Alex73 [517]2 years ago
4 0

Answer: (3,-2)

Step-by-step explanation:

-3x-7y=5\\15x+6y=33

5(-3x-7y)=5(5)\\-15x-35y=25

new system:

-15x-35y=25\\15x+6y=33

add.

-29y=58\\y=-2

plug in -2 for y

-3x-7(-2)=5\\-3x+14=5\\-3x=-9\\x=3

system:

(3,-2)

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