Subtract 11x - 5y from the sum of 7x + 13y and -26x +19y

When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

How do you determine if an ordered pair is a solution to a given equation?