21^2: 3/7+21^2 0,2 от 86,5 86,5+(0,2*6) а)1/4*4 3/4*16/57+(4 3/4+1 2/3)*16/21+2/27*4 1/2 б)(4/5+1/6)*(23 2/3-15 5/9)*45/58 -1/2

Question

Математика: 21^2: 3/7+21^2 0,2 от 86,5 86,5+(0,2*6) а)1/4*4 3/4*16/57+(4 3/4+1 2/3)*16/21+2/27*4 1/2 б)(4/5+1/6)*(23 2/3-15 5/9)*45/58 -1/2

vlada362 · Answer

(4/5+1/6)*(23 2/3-15 5/9)*45/58 -1/2 =5 7/12 1/4*4 3/4*16/57+(4 3/4+1 2/3)*16/21+2/27*4 1/2=5 5/9...

21^2: 3/7+21^2 0,2 от 86,5 86,5+(0,26) а)1/44 3/416/57+(4 3/4+1 2/3)16/21+2/274 1/2 б)(4/5+1/6)(23 2/3-15 5/9)*45/58 -1/2