1. <u><em>a=-1+b/7 is the right answer.</em></u> First you had to add by b from both sides of equation, and it gave us, 
. And then simplify, and it gave us, 
. Divide by 7 from both sides of equation, and it gave us, 
. Finally simplify, and it gave us the answer is a=-1+b/7 is the right answer.
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2. <em><u>a=-b-1/2 is the right answer.</u></em> First you had to add by 2b from both sides of equation, and it gave us, 
. And then simplify, and it gave us, 
. Next you can also divide by -4 from both sides of equation, and it gave us, 
. Finally simplify, and it gave us the answer is a=-b-1/2 is the right answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie
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Answer: -3/4
Step-by-step explanation: y2-y1/x2-x1 -1-5=-6, 6- (-2) = 8. -6/8 = -3/4.
-3/4 is the answer.
Answer: x children and (481-x) adults.
1.25x +2.25(481-x) = 865.25
1.25x +1082.25 -2.25x =865.25
x= 217
so 217 children and 481-217 = 264 adults
hope this helped <333
