N5 Решите уравнение: 1) (1,34+x) 58,3, 4,26; 2) (94,2)-1,266-3,254; 3) 4,75 (x0,67) 3,025; 4) 40,3-(63,4a) 36,62.

• 1) (1,34+x) ⋅ 58,3 = 4,26;

1,34 + x = \(\frac{4,26}{58,3}\)

1,34 + x = 0,073

x = 0,073 - 1,34

x = -1,267

• 2) (94,2 - a) - 1,266 = 3,254;

94,2 - a = 3,254 + 1,266

94,2 - a = 4,52

a = 94,2 - 4,52

a = 89,68

• 3) 4,75 - (x - 0,67) = 3,025;

x - 0,67 = 4,75 - 3,025

x - 0,67 = 1,725

x = 1,725 + 0,67

x = 2,395

• 4) 40,3 - (63,4 - a) = 36,62.

63,4 - a = 40,3 - 36,62

63,4 - a = 3,68

a = 63,4 - 3,68

a = 59,72

Ответ: 1) x = -1,267; 2) a = 89,68; 3) x = 2,395; 4) a = 59,72