0.5/1.25=0.4
7/5/11/7=49/55 -3/11=34/55+4/10 =34+22/55 =56/55
56/55 *3= 168/55
3/2+1/4=7/4
7/4/55/3= 21/220
7/4/21/220= 220*7/4*21
36х=45·24,
36х=1080,
х=1080/36,
х=30
1. 2x+x=9 3x=9 x=3
2. 5x+x=-24 6x=-24 x=-4
3. 5x+7x=90 12x=90 x=1.2
4. 5x-15=4x x=15
5. 4x+24=x 3x=24 x=8
6. -21+14x=-6x-1 20x=20 x=1
7. 8-12x=-7x+10 5x=2 x=0,4