Question

Blh mnta bntuannya ?? no 3o smpai 39 ,kl bsa cpt ya mksh :)

Answer 1

36. a)
180=7x+8+5x+4
180=12x+12
180-12=12×
168=12x
168:12=x
14=x
b)
180=3x+30
180-30=3x
150=3x
150:3=x
50=x

Answer 2

39.
x=
40'+7x=180'
7x=180'-40'
7x=140'
x=140'/7
x=20'

y=
80'+2y+40'=180'
120'+2y=180'
2y=180'-120'
2y=60'
y=60'/2
y=30'
40'(kita namakan sudut COB)didapatkan
180'-sudut obe
180'-7x
180'-7(20)
180'-140'
40'

z=
2y+40'+4z=180'
2(30')+40'+4z=180'bu
60'+40'+4z=180'
100'+4z=180'
4z=180'-100'
4z=80'
z=80'/4
z=20'

jadi,x+y+z=20'+30'+20'
=70'

semoga bermanfaat....