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Solnce55 [7]
4 years ago
8

Y=-2x+14x+y=9 solve using the substitution method please show steps​

Mathematics
1 answer:
WINSTONCH [101]4 years ago
5 0

Answer:

x = 4

y = -7

Step-by-step explanation:

y = -2x + 1

4x + y = 9

4x + y = 9

4x + (-2x + 1) = 9

4x - 2x + 1 = 9

2x + 1 = 9

2x = 9 - 1

2x = 8

x = 8/2

<u>x = 4</u>

4x + y = 9

4(4) + y = 9

16 + y = 9

y = 9 - 16

<u>y = -7</u>

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