Решите уравнение 
а)0,12+0,76х=0,66(х+1) 
б)0,005(х+2)=0,007х+0,001(х-5)

а) 0.12+0.76х=0.66(х+1)0.12+0.76=0.66х+0.66-0.66х+0.76х=-0.12+0.660.1х=0.54х=0.54:0.1х=5.4

а)0,12+0,76х=0,66(х+1)    | *10012 + 76X = 66X + 6676X - 66X = 66 - 1210X = 54X = 5,4б)0,005(х+2)=0,007х+0,001(х-5)    | *10005X + 10 = 7X + X - 510 +5 = 8X - 5X3X = 15X = 5