2007-12-13 05:25:38 · 20 answers · asked by desiree 1 in Science & Mathematics ➔ Mathematics
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7y-2y+13y-7+2+5=180
18y+18=180
18y=162
y=9
2007-12-13 05:28:15 · answer #1 · answered by f*** Y!A 5 · 1⤊ 0⤋
+7y-7+20-2y+13y+5=180
7y -7 +7 +20 -20 - 2y + 13y +5 - 5 = 180 +7 - 20 -5
7y - 2y + 13y = 187 - 25
18y = 162
18y / 18 = 162 / 18
y = 81 / 9
y = 9
To check the answer, put the result in the given equation
+7(9)-7+20-2(9)+13(9)+5=180
+63-7+20-18+117+5 = 180
180 = 180
therefor y=9 is the correct answer
2007-12-16 08:52:13 · answer #2 · answered by Rayan Ghazi Ahmed 4 · 0⤊ 0⤋
7y - 2y + 13y = 180 + 7 - 20 + 5
18y = 162
18y/18 = 162/18
y = 9
2007-12-13 13:34:47 · answer #3 · answered by xoxo_sexy_biatch_xoxo 5 · 1⤊ 0⤋
+7y-7+20-2y+13y+5=180
First, take the ones with the variables.
7y-2y+13y
7y-2y=5y
5y+13y=18y
Next, take the ones with the numbers.
-7+20+5
-7+20=13
13+5=18
Then, put them both together. Bring the answer down too.
18y+18=180
Subtract 18 from both sides.
18y=162
To get the variable on one side and a number on the other, divide both sides by 18.
y=9
2007-12-13 13:35:49 · answer #4 · answered by Nate 5 · 1⤊ 0⤋
+7y -7 + 20 -2y +13y +5 = 180
( +7y + -2y + 13y ) + ( -7 + 20 + 5 ) = 180
( 18y ) + ( 18 ) = 180
( 18y ) = ( 180 - 18 )
18y = 162
y = 9
2007-12-13 13:30:12 · answer #5 · answered by jherrick 2 · 2⤊ 0⤋
y=9
combine like terms (+7y, -2y, +13y) and (-7, +20, +5) so that you end up with 18y+18=180.
subtract 18 from each side so you now have 18y=162.
divide each side by 18 to find y ... 162/18 = 9, so y=9.
2007-12-13 13:31:55 · answer #6 · answered by Elle 6 · 1⤊ 0⤋
+7y-7+20-2y+13y+5
+7y add -2y add 13y = 18y
-7 add 20 +5 = 18
18y +18 = 180
18y+18-18=180-18
18y=162
y=9
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Bowser, you accidentally added 18 to the right side of the equation instead of subtracting it.
Yea I thought something was wrong when i double checked it....xD im only 13 what did you expect?
2007-12-13 13:28:42 · answer #7 · answered by Anonymous · 0⤊ 1⤋
+7y-7+20-2y+13y+5=180
Group the like terms...
18y + 18 = 180
y + 1 = 10
y = 9
2007-12-13 13:30:30 · answer #8 · answered by jgoulden 7 · 1⤊ 0⤋
(7y-2y+13y) + (-7+20+5) = 180
18y + 18 = 180
18y = 180 - 18
18y = 162
y = 162/18
y = 9
Voici ce que nous faisons en France !
Bonne chance !
2007-12-13 13:51:26 · answer #9 · answered by Lechoix 5 · 0⤊ 0⤋
y=9
2007-12-13 13:42:41 · answer #10 · answered by J 6 · 1⤊ 0⤋
y=9
2007-12-13 13:30:11 · answer #11 · answered by The bored and hyper one 3 · 1⤊ 0⤋