Реши уравнения:
1) 2,16а - 0,7а + 1,04а =11,77
2) 15,05b + 3,2b - b =34,5
3) 4,8d + 5,91 + 13,2d =150
4) 0,2с + 1,6с + 1,1 =52,5 + 3,5
5) (2,3х +0,9) : 0,04 - 19,176 =9,074
6) 4,505 : (0,4у - 0,02) + 2,29 =3,54
7) 10,72 + 0,324 : (5,5 - t : 78) =10,8
8) 25,12 - 5,12 * (4,5 - 3z) =0,056 * 380

2,5a=11,77      a=11,77:2,5a=4.70817,25b=34,5b=34,5:17,25b=24,8d+13,2d=150-5,9118d=144,09d=144,09:18d=8,0051,8c=56-1,11,8c=54,9c=54,9:1,8c=30.5(2,3x+0.9):0.04=9,074+19.1762.3x+0.9=28,25*0.042.3x+0.9=1.132.3x=1.13-0.92.3x=0.23x=0.23:2.3x=0.14,505:(0.4y-0,02)=3,54-2,29(04y-0.02)*1,25=4.5050.4y-0.02=4.505:1.250.4y-0,02=3.6040.4y=3.604+0.020,4y=3,624y=3.624:0,4y=9.06

1) 2,16а - 0,7а + 1,04а =11,77(2.16-0.7+1.04)а=11.772.5а=11.77а=11.77:2.5а=4.7082) 15,05b + 3,2b - b =34,5(15.05+3.2)b-b=34.518.25b-b=34.517.25b=34.5b=34.5:17.25b=23) 4,8d + 5,91 + 13,2d =150(4.8+13.2)d=150-5.9118d=144,09d=144.09:18d=8.0054) 0,2с + 1,6с + 1,1 =52,5 + 3,5(0.2+1.6)с+1.1=52,5 + 3,51.8с+1.1=561.8с=56-1.11.8с=54.9с=54.9:1.8с=30.55) (2,3х +0,9) : 0,04 - 19,176 =9,074 2,3х +0,9 : 0,04 - 19,176 =9,0742.3x+22.5-19.176=9.0742.3x+3.324=9.0742.3x=9.074-3.3242.3x=5.75x=5.75:2.3x=2.5