Question

3x over 10 = 1,290
please help

Answer 1

3x/10= 1290

Mutiply by 10 for both sides

3x/10*10= 1290*10

Cross out 10 and 10 , divide by 10 and then becomes 3x

3x=12900

divide by 3 for both sides

3x/3= 12900/3

Cross out 3 and 3 , divide by 3 and then becomes x

x= 4300

Answer: x= 4300