Find the missing number : 7 = 12: 21

a) 3

b) 14

c) 4

d) 12

How can you solve an equation with a variable on both sides? complete the explanation. you can solve the equation by using *(blank)* operations to get the variable terms on one side of the equal sign and the constant terms on the *(blank)* side. then *(blank)* both sides by the coefficient of the resulting variable term.

What is the average diastolic blood pressure for adults

If i have 20$ and i gave 5$ away how much i got