Answer:
6r+7=13+7r
6r+7=7r+13
6r+7−7r=7r+13−7r
−r+7=13
−r+7−7=13−7
−r=6
= 
r=−6
Step-by-step explanation:
:) This is the answer
Answer:
75
Step-by-step explanation:
he can download 2.5 songs per minute so 2.5 x 30 is 75
Answer: 180 i believe
Step-by-step explanation:
Answer:
she can have 4 marbles in the bag.
Step-by-step explanation:
Because if one out of four is read then there is four marbles.