Tentukan akar dari sistem persamaan linear dua variabel berikut x + 3y = 5 2x + 5 = 5y + 70 plisssss teman teman buat besok nihhhhhh sama caranya aku ga ngerti sama sekali
hikmanh
X +3y =5 2x+5 = 5y +70 sama saja 2x-5y = 65 jadi : (x2) = 2x + 6y = 10 2x-5y = 65 (x1) = 2x - 5y = 65 - 11 y = -55 y = -5 x +3y =5 x = 5- 3y x = 5- 3(-5) x = 5- (-15) x= 20
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hikmanh
x +3y =5
2x+5 = 5y +70 sama saja 2x-5y = 65
jadi :
x + 3y (x2) = 2x + 6y = 10
2x-5y = 65 (x1) = 2x - 5y = 65 -
11 y = -55
y = -5
x +3y =5
x = 5- 3y
x = 5- 3(-5)
x = 5- (-15)
x= 20
2x+5 = 5y +70 sama saja 2x-5y = 65
jadi :
(x2) = 2x + 6y = 10
2x-5y = 65 (x1) = 2x - 5y = 65 -
11 y = -55
y = -5
x +3y =5
x = 5- 3y
x = 5- 3(-5)
x = 5- (-15)
x= 20
jadi 2x-5y=65
x+3y=5 (dikali 2) = 2x+6y=10
2x-5y=65 (dikali 1) = 2x-5y=65
terus di kurangin 11y=-55
y=-5
x+3y=5
x+3(-5)=5
x+(-15)=5
x=5+15
x=20