Решите уравнение:
3(0,5x-4)+8,5x=18

1.5x-12+8.5x-18=010x-30=010x=30x=3

3(0.5x-4)+8.5x=181.5x -12 +8.5x=1810x=18+12x= 30:10х=3---------------------------3(0.5*3 -4) +8.5 *3  =183(1.5-4) + 25.5 =183* (-2.5) +25.5=18-7.5  + 25.5 = 1818=18