98 × ( - 15 / - 14 ) × ( 20 - 4 × 10 ) =
98 × ( - 15 / - 14 ) × ( 20 - 40 ) =
98 × ( - 15 / - 14 ) × ( - 20 ) =
- 98 × ( - 15 / - 14 ) × 20 = ( se simplifică - 98 cu - 14 )
- 7 × 15 × 20 = - 2100
98 × ( - 15 / - 14 ) × ( 20 - 4 × 10 ) =
98 × 1, 0 ( 714285 ) × ( 20 - 40 ) =
105 × ( - 20 ) = - 2100