Answered

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Solve the following system of equation using the method of substitution. Show the work that leads to your
answer.
y=-2x-10
2x + 5y = 6

Sagot :

devishri1977

Answer:

Step-by-step explanation:

y = -2x - 10       ----------------------(I)

2x + 5y = 6      __________(II)

Substitute y = -2x - 10 in equation (II)

2x + 5 (-2x -10) = 6

2x  + (-2x) *5 + (-10) *5 = 6

2x - 10x - 50 = 6

-8x - 50 = 6

        -8x = 6 + 50

       -8x = 56

          x = 56/-8

x = -7

Plugin x = -7 in equation (I)

y = -2*(-7) - 10

  = 14 - 10

y = 4

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