Question

Cine ma ajuta cu aceste exercitii? Dau coroana

Answer 1

Răspuns:

7.

$\frac{475 + 38 \times 10 - 195}{4800 \div 100 - 44} \div 5 \times x = 297 \\ \frac{475 + 380 - 195}{48 - 44} \div 5 \times x = 297 \\ \frac{660}{4} \times \frac{1}{5} \times x = 297 \\ \frac{165}{5} \times x = 297 \\ 33 \times x = 297 \\ x = 9$

8.

825÷(700-695)+(81÷9-476×0)×x=624

825÷5+9×x=624

165+9x=624

9x=459

x=51

9.

[(x÷7+108)÷4×10-192]÷4=87

(x÷7+108)÷4×10-192=348

(x÷7+108)÷4×10=540

(x÷7+108)÷4=54

x÷7+108=216

x÷7=108

x=756