emz1904 emz1904

17-09-2020
Mathematics

contestada

Solve the simultaneous equations
b) 4x + 3y = 6
5x - 3y = 21
c) 6x – 4y = 39
y = 6 - 2x

Respuesta :

gloriagyamfuaa399 gloriagyamfuaa399

17-09-2020

Answer:

X=6. Y= - 6

Step-by-step explanation:

Put y=6-2x in b)

4x+3(6-2x)=6

4x+18-6x=6

-2x=6-18

- 2x=-12

Divide both sides by - 2

X=6

Put x=6 in y = 6-2x

Y=6-2(6)

Y=-6

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