X= y-2
2x+3y=21
Solution_______
1 answer:
X= y-2
2x+3y=21
⇒ 2(y-2)+3y=21
⇒ 2y-4+3y= 21 (distributive property)
⇒ (2y+3y)-4= 21 (combine like terms)
⇒ 5y= 21+4
⇒ 5y= 25
⇒ y= 25/5
⇒ y= 5
The final answer is y=5~
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Each child would receive $18,000
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2/3in = 1ft
30ft = ?in
30/(2/3)=45
45in
Answer:
a = b*4/7
a-b/b
=4b/7 -b /b
=(4b-7b)/7 /b
=-3b/7 / b
cancelling b,
= -3/7
It takes 3 days to complete one hour of reading. So 3 x 20 = 60 days total.
