Question

Сумма 7/9 * 46,2 - 7/9 * 6,2 и 2/9 * 40​

Answer 1

((7/9)×46,2-(7/9)×6,2)+(2/9)×40=(7/9)×(46,2-6,2)+(2/9)×40=(7/9)×40+(2/9)×40=40×((7/9)+(2/9))=40×(9/9)=40×1=40.