Question

Ответ 4 ,6 ,10,14, 20,26,30,31​

Answer 1

20)1.26+0.8×2.88=3.6

$3 frac{6}{10}$

21)0.2×2.6+6.89=7.41

$7 frac{41}{100}$

30)7.84+0.2×0.65=7.9

$7 frac{9}{10}$

31)1.2×3.6+5.78=10.1

$10 frac{1}{10}$