Question

6,7x+3x+63,5=500 помогите

Answer 1

9.7х=436.5
х=436.5:9.7
х=45

Answer 2

6,7x+3x+63,5=500

6,7x+3x=9,7x

9,7x=500-63,5

9,7x=436,5

x=436,5/9,7

x=45