Answer:
You add them, then subtract them by how many numbers there are :) So add them then subtract them by 4
Step-by-step explanation:
Answer: the answer is 3(7+3)
Step-by-step explanation: since 7+3 is in paranthases you add them first to get 10 and you multiply it by the 3 to get 30. We know its correct because 21+9=30.
Answer:
<em>Answer</em><em> </em><em>is</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>15</em>
<em>Answer</em><em> </em><em>is given below with explanations</em><em>. </em>
Step-by-step explanation:

<em>HAVE A NICE DAY</em><em>!</em>
<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>.</em>
Let x = Darlene's dog's weightlet y = Leah's dog's weight x = 5yx + y = 84 so, 5y + y = 84, which means 6y = 84 so, y = 84/6 = 14x = 5(14) = 70 Darlene's dog = 70 lbs, Leah's dog = 14 lbs.<span> </span>
Question 1snd 2 is not clear but this is the answers for 3,4,5 picture attached