(3/4-5/6)*3+(3/4+5/6)*4

Question

(3/4-5/6)*3+(3/4+5/6)*4

Answer 1

3/4-5/6=9/12-10/12=-1/12
-1/12*3=-3/12
3/4+5/6=9/12+10/12=19/12
19/12*4=76/12
-3/12+76/12=73/12=6 1/12

Comments

помоги еще вот этот: (1/2+2/3):5/6-12*(1/2-2/3)