Question

Tentukan nilai x,y,z dari gambar berikut !

Answer 1

6x+3x = 90
9x = 90
x = 90/9
x = 10

2y + 28 + y = 90
3y + 28 = 90
3y = 90 - 28
3y = 62
y = 62/3
y = 30 2/3

70 + (5x-5) = 90
70 + 5x - 5 = 90
65 + 5x = 90
5x = 90 - 65
5x = 25
x = 25/5
x = 5

Answer 2

Penyiku = 90°

3x+6x=90
9x=90
x=90/9
x=10

2y+28+y=90
3y+28=90
3y=90-28
3y=62
y=62/3
y=30 2/3

70+5x-5=90
65+5x=90
5x=90-65
5x=25
x=25/5
x=5