Answer:
z=12
Step-by-step explanation:
multiply both sides of the equation by 2
12=z
swap the sides of the equation
z=12

Remove parenthesis.
Distribute 3 and 7 through the parenthesis

Collect the like terms by adding their coefficients.

Collect the like terms by adding their coefficients.

Collect like terms by calculating the sum or difference of their coefficients. Use addition and subtraction rules to calculate the expression.
Answer:
Step-by-step explanation:11,872
Answer:
7:12
Step-by-step explanation:
there is 5 turtles and all 5 turtles plus 7 frogs = 12
(5+7+12)
7:12