Hitunglan nilai x. .... Question from @h461506

April 2023 1 5 Report

Hitunglan nilai x.

a. Gambar menunjukkan sudut siku-siku yg memiliki besar 90 derajat

x°+(30+x°)=90°

2x°=90°-30°

2x°=60°

x=30

b. Total sudut gambar adalah 180°

3x°+(5x-12)°+(4x-18)°=180°

12x°-30°=180°

12x°=180°+30°

12x°=210°

x=17,5

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