Answer:
x
=
21/2
Step-by-step explanation:
Move all terms not containing x to the right side of the equation.
3x=x+21
Move all terms containing x to the left side of the equation.
2x=21
Divide each term by
2
and simplify.
x
=
21/2
Answer:
Bx3=27 there are 9 blue marbles
Step-by-step explanation:
35+(18x)
35 is just advance while we have to pay 18 extra everyday
