Question

SPLDV
Jawaban no 1-5 kerjakan sungguh sungguh salah=report

Answer 1

1) 3x - y = -22
y = 22 + 3x

5x + 3y = -4

5x + 3(22 + 3x) = -4

14x = -70

x = -5

y = 22 - 15

y = 7

hp = { -5 , 7 }

2)

x + 2y = 4
x = 4 - 2y

2x - 3y = -13

2(4 -2y) - 3y = -13

-7y = -21

y = 3

x = 4 - 6

x = -2

hp = { -2, 3 }

4) l + p = 30

l - p = 4

~~~~~~~~

2l = 30 + 4

l = 17 siswa

p = 30 - 17

p = 13 siswi

5)
s + m = 55

2s + 2m = 110

2s + 4m = 144
~~~~~~~~~~~~ -
-2m = -34

m = 17

s = 55 - 17 = 38

besar pendapatan

= 38 x 1000 + 17 x 2000

= 38.000 + 34.000

= 72.000