Solve for x?
45) Solve for “n”: 3(n – 1) = 2n + 8
46) Solve for “y”: 4y + 3(y + 3) = 14y + 23
回答 (13)
✔ 最佳答案
3(n – 1) = 2n + 8
3n - 3 = 2n + 8
3n - 2n = 8 + 3
n = 11
4y + 3(y + 3) = 14y + 23
4y + 3y + 9 = 14y + 23
7y - 14y = 23 - 9
-7y = 14
-y = 14/2
-y = 7
y = 7 x (1)
y = -7
3n-3=2n+8
=> n=11
4y+3y+9=14y+23
=> 7y= (-14)
=> y=(-2)
I`m searching everywhere for an x !!!!
Question 45)
3n - 3 = 2n + 8
n = 11
Question 46)
4y + 3y + 9 = 14y + 23
- 14 = 7y
y = - 2
45)
3(n - 1) = 2n + 8
3*n - 3*1 = 2n + 8
3n - 3 = 2n + 8
3n - 2n = 3 + 8
n = 11
46)
4y + 3(y + 3) = 14y + 23
4y + 3*y + 3*3 = 14y + 23
4y + 3y + 9 = 14y + 23
7y - 14y = -9 + 23
-7y = 14
y = 14/-7
y = -2
first distribute
3n-3=2n + 8
n=11
2. 4y+3y+9=14y+23
7y+9=14y+23
-7y=14
y=-2
45. 3(n-1) = 2n +8
3n-3 =2n+8
-3-8 = 2n-3n
-11 =-n
-11 (-1)=-n (-1)
11=n
n=11
46. 4y + 3(y + 3) = 14y + 23
4y + 3y + 9 = 14y +23
7y +9 = 14y +23
9 -23 = 14y-7y
-14 = 7y
-14/7 = 7y/7
-2 = y
y = -2
45.) 3(n – 1) = 2n + 8
3n -3 = 2n +8
answer is (n = 11)
46.) 4y + 3(y + 3) = 14y + 23
4y + 3y + 9 = 14y + 23
answer is (y = - 2 )
3(n – 1) = 2n + 8
3n - 3 = 2n + 8
3n - 2n = 8 + 3
n = 11
4y + 3(y + 3) = 14y + 23
4y + 3y + 9 = 14y + 23
7y - 14y = 23 - 9
-7y = 14
y = -2
3(n-1) = 2n+8
3n-3 = 2n+8
3n-2n = 8+3
n = 11
4y+3(y+3)=14y+23
4y+3y+9 = 14y+23
7y+9 = 14y+23
7y-14y = 23-9
-7y = 14
y = 14/-7 = -2
45) 3(n-1) = 2n+8
3n-3 = 2n+8
3n-2n = 8+3
n = 11
46) 4y+3(y+3) = 14y+23
4y+3y+9 = 14y+23
7y+9 = 14y+23
9-23 = 14y-7y
7y = -14
y = -2
收錄日期: 2021-05-01 10:42:45
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