500+x=1000 10x=300 20:x=5

Question

500+x=1000
10x=300
20:x=5

Answer 1

500 + х = 1000 
х = 1000 - 500
х = 500
10х = 300
х = 30
х = 4

Answer 2

500+500=1000. 10*30=300. 20:4=5