Solve 12 x 103 = . Use how the placement of the decimal point changes when multiplied by a power of ten to help you.

What is the sum of 25x + 15y and (-18x - 6y)

How do you solve questions 29 and 31?

Find the mistake made in the steps to solve the equation below. a. the justification for step 2 is incorrect and should be the subtraction property of equality. b. step 2 is incorrect and should be . c. step 3 is incorrect and should be . d. the justification for step 3 is incorrect and should be the multiplication property of equality.