Question

Hitung lah nilai X dari soal berikut:

Answer 1

A. 2x +142 + 28 = 360°
2x + 170 = 360
2x = 360 - 170
2x = 190
x = 190 : 2
x = 95

b. 120 + 90 + 30 + 3x = 360
240 + 3x = 360
3x = 360 - 240
x = 120 : 3
x = 40

C. 180 - 145 = 35°

d. 180 - (55 + 50 )
= 180 - 105
= 75°

e. 180 - ( 70 + 90 )
= 180 - 160
= 20°