9- (-2) = __ a0

solve the equation

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Find the value of x. give reasons to justify your solutions! h ∈ ig