Х+25=50×10, 52-х=40:4

1)х+25=50×10 х+25=500 х=500-25 х=475 2)52-х=40÷4 52-х=10 х=52-10 х=42

x+25=500. 52-x=10 x=500-25. x=52-10 x=475. x=42. 475+25=59×10. 52-42=10 500=500. 10=10