3x + 4 = 13 by adding -4 to both sides of the equation we say that +4 and -4 on the left side of this equation ? each other out. algebra

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries