manicobthewat manicobthewat

07-04-2017
Mathematics

contestada

int the solution for the systems of equations

6x=90+3y
x-3y=50

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Catherinec1 Catherinec1

07-04-2017

x-3y=50
+3y +3y
x=50+3y

6(50+3y) = 90+3y
300+18y=90+3y
-3y -3y
300+15y=90
-300 -300
15y=90
/15 /15
y = 6

x=50+3(6)
x=50+18
x=68

x=68
y=6

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