Question

35+(b+165)=658

400×(x—5)=10000

Answer 1

Пошаговое объяснение:

35+(b+165)=658

35+б+165=658

б=658-200

б=458

400×(x—5)=10000

400х-2000=10000

400х=12000

х=30

Answer 2

$35 + (b + 165) = 658 \\ 35 + b + 165 = 658 \\ b = 658 - 35 - 165 \\ b = 458$

$400(x - 5) = 10000 \\ 400x - 2000 = 10000 \\ 400x = 10000 + 2000 \\ 400x = 12000 \\ x = \frac{12000}{400} \\ x =30$