Question

Реши уравнения х•7=330-274. (502-2)•а=1000. х+30•5=365. х:4=100-22

Answer 1

7х = 56

х = 56÷7

х = 8

(502-2) × а = 1000

500а = 1000

а = 1000÷500

а = 2

х+30×5=365

х+150=365

х=365-150

х=215

х÷4=100-22

х÷4=78

х=78×4

х=312