Решите уравнени 8(х-14=56 (46-х)*19= 418 9(143-13х)=234 17(5х-16)=138

1) 8 * (х - 14) = 56;

х - 14 = 56 : 8;

х - 14 = 7;

х = 7 + 14;

х = 21.

2) (46 - х) * 19 = 418;

46 - х = 418 : 19;

46 - х = 22;

46 - 22 = х;

х = 24.

3) 9 * (143 - 13х) = 234;

143 - 13х = 234 : 9;

143 - 13х = 26;

143 - 26 = 13х;

117 = 13х;

х = 117 : 13;

х = 9.

4) 17 * (5х - 16) = 138;

5х - 16 = 138 : 17;

5х - 16 = 8 2/17;

5х = 8 2/17 + 16;

5х = 24 2/17;

х = 24 2/17 : 5;

х = (24 * 17 + 2)/17 : 5;

х = 410/17 * 1/5;

х = (5 * 82)/(17 * 5);

х = 82/17;

х = 4 (82 - 4 * 17)/17;

х = 4 (82 - 68)/17;

х = 4 14/17.