ответ:
пошаговое объяснение:
(1 1/12+3,75)-(-х)=4,5
(13/12+375/100)+х=45/10 13/12+375/100=13/12+75/20=(130+450)/120=580/120=29/6
29/6+х=45/10
х=29/6-45/10 29/6-45/10=(145-135)/30=10/30=1/3
х=1/3
-(5 2/3-1,6)-х-=6 1/3
-17/3+1 6/10-х=19/3
-17/3+16/10-19/3=х
х= -36/3+8/5
х= ( -180+24)/15
х=156/15=52/5=10 2/5
х-(7 5/9-5 1/6)=-3,5
х+4 6/10-3 4/7= -8 1/14
х+23/5-25/7= -113/14
х= -113/14-23/5+25/7
х=((-113+50)/14)-23/5
х= -63/14-23/5
х= (-315-322)/70=637/70=6 1/10
х-(-4,6+3 4/7)=-8 1/14
х-68/9+31/6= -3 1/2
х= -7/2+68/9-31/6
х=( -63+136-93)/18= -20/18
х= -10/9= -1 1/9
40%-60%