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14-04-2021
Mathematics

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Solve the system: 10x-9y=8 21y+15x=0.5

PLEASE HELP NEED ASAP

Respuesta :

14-04-2021

Answer:

x = 1/2

y = -1/3

Step-by-step explanation:

10x - 9y = 8 (Multiply by 3)

15x + 21y = 0.5 (Multiply by -2)

30x - 27y = 24

-30x - 42y = -1

-69y = 23

y = -1/3

10x - 9y = 8

10x - 9(-1/3) = 8

10x + 3 = 8

10x = 5

x = 1/2

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