<em><span>Помогите решить наиболее удобным способом!!!! ( 2 целых 7/8, 9 целых</span></em> 1/2)
<em>7/12 * 2 7/8 + 2 7/8</em>
<em>-------------------------</em>
<em>9 1/2 * 2 7/8 * 1/3</em>
2 7/8(7/12+1) 7/12+1 19/12
-------------------=-------------=--------- =19/12*6/19=6/12=1/2
9 1/2*2 7/8*1/3 9 1/2*1/3 19/6
2 7/8(7/12 + 1) = <span>1 7/12</span><span> </span>= <span>19/12</span> = 19/12 * 6/12 =6/12=1/2
9 1/2* 2 7/8 * 1/3 9 1/2* 1/3 19/6