Question

Repede ⚡ va rog dau coroana
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Answer 1

Explicație pas cu pas:

a) x = 90° - (30° + 25°) = 90° - 55°

=> x = 35°

b) 2x + 70° = 140°

2x = 140° - 70°

2x = 70°

x = 70° ÷ 2

=> x = 35°

c) x + 20° + 2x + x = 180°

4x = 180° - 20°

4x = 160°

x = 160° ÷ 4

=> x = 40°

Answer 2

Răspuns:

a) ×=90-(30+25°)=90-55

=>×=35

b)2×+70°=140

2×=140-70

×=70÷2

=>×=35°

c)×+20+2×+×=180

4×=160

×=160÷4

=>40