Скоротіть дріб 12c2-4c/3c-1​

А)13u+(6r-18u)=-5u+6r
б)-21a-(20k-21a)=-20k
в)7t+(24-3t)=4t+24
г)-(16q-6)+26=-16q+32

2) а)(25+2g)+(8g-11)=14+10g
б)-(8u+8x)-(24u-13x)=5x-32u
в)(23-20c)+(28c-8)=15+8c
г)(22w-25z)-(20+21w-15z)=w-10z-20

3) а)16z+(19z-25)-(6z+7)=29z-32
б)(3u-25)-26u-(10-16u)=-7u-35
в)(15-24w)-(22w-3)-6=12-46w
г)19r-(r+7t)-(19t-28r)=46r-26t

5.Упростите выражение:
1) а)6(5d-11)+9d=30d-66+9d=39d-66
б)11p+8(12-12p)=11p+96-96p=96-85p
в)8(2m-5)-16m+11=16m-40-16m+11=-29
г)8++11(7-12t)+5t=8+77-132t+5t=85-127t

2) а)14u-6(15u-15)=14u-90u-90=-76u-90
б)-15(9q+8)+6=-120q-105+6=-120q-99
в)11+5s+9(12s-5)=11+5s+108s-45=-34+113s
г)14-12(12-5n)-11n=14-144+60n-11n=130+49n

 a) 11/22*32/3-(25/6+35/6*7/27)*3/5
-(1*5/6+3*5*7/162)3/5+11*3*2/22*3
-(10/6+105/162)3/5+11*2/22
22/22-(5/3+35/54)3/5
1-90+35/54 3/5
1-(90+35)*3/54*5
1-125*3/270
1-375/270
1-25/18
18-25/18
-7/18
-0.3888889
ответ: -0.3888889
б) (3 1/4+2 1/6)*3/2*5-2/3/4*1/9
(3*1+2*1)*3/10-2*1/3/4*9
(3/4+2/6)*3/10-2*1/3*1/4*9
-2*1*1/3*4*9+(3/4+1/3)*3/10
-2/108+ 9+4/12 *3/10
(9+4)*3/12 /10-1/54
(9+4)*3/12*1/10-1/54
(9+4)*3*1/12*10-1/54
13*3/120-1/54
39/120-1/54
13/40-1/54
351-20/1080
331/1080
0.30
ответ:0.30
в)  (6 3/4-5 1/8:1 9/32)*5/11
(6*3/4-5*1*9/8 /1*32)*5/11
(18/4-5*1*9/8*1/1*32)*5/11
(-5*1*9*1/8*1*32+9/2)*5/11
(-5*9*1/8*32+9/2)*5/11
(-45/256+9/2)*5/11
-45+1152/256*5/11
(-45+1152)*5/256*11
1107*5/2816
5535/2816
1.965554
ответ: 1.965554
г) (1 9/16 * 3 1/5 + 16 2/3 - 9 : 2 2/5) : (17 7/12 - 6 1/3)
9/16*3 1/5+16*2/3-9*2/2*5 / 17*7/12-6*1/3
9*3*1/16*15+32/3-9/5 / 119/12-6/3
27/240+32/3-9/5 / 119/12-2
9/80+32-9/5 / 119-24/12
(9/80+32/3-9/5)*12/119-24
27+2560-432/240*12/119-24
(27+2560-432)*12/240(119-24)
1255*12/240*95
25860/28800
431/380
1.1342105
ответ: 1.1342105