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4 years ago

6

Y=5x+20 Y=-7x-16 Solve each system by substitution

2 answers:

madam [21]4 years ago

8 0

Answer: x = -3 ; Y = 5

Step-by-step explanation:

Y=5x+20

Y=-7x-16

5x+20 = -7x-16

5x+ 7x = -16 - 20

12x = - 36

x = -36 / 12

x = -3

Y=5x+20

Y = 5.(-3) + 20

Y = - 15+20

Y = 5

icang [17]4 years ago

7 0

Answer:

x=3

y=35

Step-by-step explanation:

5x+20=-7x-16

-16+20=4

5x=-7x+4

5x+7x= 12x

12x=4

12/4=3

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