Answer:
He can add through calculater or by doing addition in his mind
Answer:
Step-by-step explanation:
5y + 6y + 7y = 18y......any numbers that add(or subtract) to equal 18, stick them before the y....
or it could be : 10y + 10y - 2y = 18y or 5y + 10y + 3y or 30y - 20y + 8y....I could go on forever...lol
Answer:
70
Step-by-step explanation:
(5x2) x 7
(10) x 7 = 70
Answer:
x=4 is vertical line it's an undefined slope