7/3 + 5/6 - 2,5 + 40% = A. 2 2/30 B. 2 1/30 C. 1 1/15 D. 1/15

Penyelesaian :

7/3 + 5/6 - 2,5 + 40%
= (( 7/3 + 5/6 ) - 2,5 )) + 40%
= (( 14/6 + 5/6 ) - 2,5 )) + 40%
= ( 19/6 - 2,5 ) + 40%
= 20/30 + 40/100
= 2/3 + 4/15
= 10/15 + 4/15
= 14/15

[tex] \frac{7}{3} + \frac{5}{6} - \frac{25}{10} + \frac{40}{100} \\ = \frac{70}{30} + \frac{25}{30} - \frac{75}{30} + \frac{12}{30} \\ = \frac{32}{30} \\ = 1 \frac{2}{30} [/tex]