Номер 498

1) 8(x – 14) = 56; x – 14 = 56 : 8; x – 14 = 7; x = 7 + 14; x = 21;

2) (46 – x) · 19 = 418; 46 – x = 418 : 19; 46 – x = 22; x = 46 – 22; x = 24;

3) 9(143 – 13x) = 234; 143 – 13x = 234 : 9; 143 – 13x = 26; 13x = 117; x = 117 : 13; x = 9;

4) 17(5x – 16) = 238; 5x – 16 = 14; 5x = 14 + 16; 5x = 30; x = 30 : 5; x = 6.