a) (4,6x + 5,8) : 1,6 = 6,5 б) 4,2x + 8,4 = 14,7

Решим уравнения. a) $$ (4.6x + 5.8) : 1.6 = 6.5 $$ $$ 4.6x + 5.8 = 6.5 * 1.6 $$ $$ 4.6x + 5.8 = 10.4 $$ $$ 4.6x = 10.4 - 5.8 $$ $$ 4.6x = 4.6 $$ $$ x = 1 $$ б) $$ 4.2x + 8.4 = 14.7 $$ $$ 4.2x = 14.7 - 8.4 $$ $$ 4.2x = 6.3 $$ $$ x = rac{6.3}{4.2} $$ $$ x = 1.5 $$ Ответ: а) $$x = 1$$, б) $$x = 1.5$$