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Goshia [24]
3 years ago
10

2x - 5y = 5 and y = x + 2

Mathematics
2 answers:
Dafna1 [17]3 years ago
8 0

Answer:7

Step-by-step explanation:

mars1129 [50]3 years ago
7 0

Answer:

x = -5 & y = -3

Step-by-step explanation:

2x - 5y = 5          --------------------------(I)

y = x + 2               -----------------------(II)

Using substitution method

Substitute y = x + 2 in equation (I)

            2x - 5(x + 2) = 5            

      2x - 5*x + (-5)*2 = 5

            2x - 5x - 10  = 5        

Combine like terms

                -3x - 10 = 5               {Add 10 to both sides}

                        -3x = 5 +10

                        -3x = 15                 {Divide both sides by (-3)}

                           x = 15/(-3)

x = -5

Substitute the x = (-5)  in equation (II)

y = -5 + 2

y = -3

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