Bună!
6.
[tex]\\ 900 - [816 \div 4 + (902 - 188) + 234] \div 2 + x = 1000 \\ 900 - [204 + 714 + 234] \div 2 + x = 1000 \\ 900 - [918 + 234] \div 2 + x = 1000 \\ 900 - 1152 \div 2 + x = 1000 \\ 900 - 576 + x = 1000 \\ 324 + x = 1000 \\ x = 1000 - 324 \\ x = 676[/tex]
7.
[tex] \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{855 - 195}{4} \div 5 \times x = 297 \\ \\ \frac{660}{4} \div 5 \times x = 297 \\ \\ 165 \div 5 \times x = 297 \\ \\ 33 \times x = 297 \\ \\ x = 297 \div 33 \\ \\ x = 9[/tex]
