roxannekouyo roxannekouyo

02-06-2021
Mathematics

contestada

4x + 3y =18
x-3y = 7

Respuesta :

rachelsanchez0 rachelsanchez0

02-06-2021

X=5 and y= -2/3
That would be the answer in this situation

Answer Link

tolamiseolasehinde tolamiseolasehinde

02-06-2021

Answer:

x=8,y=-2/3

Step-by-step explanation:

make x the subject of formula

x=7+3y

substitute into the first equation

4(7+3y)+3y=18

28+12y+3y=18

28+15y=18

15y=18-28

15y=-10

y=-10/15=-2/3

since y=-2/3, substitute y into x=7+3y

x=7+3(-2/3)

x=7-2

x=5

Answer Link

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