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andriy [413]
3 years ago
13

3x+2y=-4 y= 4x-2 use substitution

Mathematics
2 answers:
Grace [21]3 years ago
4 0
(X,Y) = (0,-2)
Substitute the given value of y and x into the equation and simplify
lawyer [7]3 years ago
4 0

Answer: x = 0 and y = -2

Step-by-step explanation:

3x+2y=-4  ............................. equation 1

y=4x-2  ............................... equation 2

Using substitution method

substitute y=4x-2 into equation 1 , equation 1 then becomes

3x + 2(4x-2) = -4

3x+8x-4 = -4

11x-4=-4

add 4 to both sides

11x = 0

therefore:

x = 0

substitute x = 0 into equation 2 to find the value of y

y = 4x - 2

y = 4(0) - 2

y = -2

therefore:

x = 0 and y = -2

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