Evaluate the expression 3(2-1)2 + 20 – 7 for 3 = 3. Step 1: What is the first step for evaluating this expression?

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10