Solve the following equation for x. -3x-36=9 (x+8). Simplify the answer as much as possible. Thanks?
回答 (8)
✔ 最佳答案
- 3x - 36 = 9 x + 72
- 108 = 12 x
x = - 9
-3x-36=9x+72
-12x=108
x=-9
Let's distribute the 9 on the right hand side of the equation, first:
9(x+8) = 9x + 9x8
= 9x + 72
Now, let's take that expanded form back into the equation, and take a look at it:
-3x - 36 = 9x + 72, is this enough for you?
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Don't look any further if you want to attempt it from there, have a go at it :)
I'll go step by step to finish it:
-3x - 36 = 9x + 72, adding 3x to both sides
+3x +3x , and simplify
-36 = 12x + 72, subtracting 72 from both
-72 = -72, and simplify
-108 = 12x, divide both by 12
/(12)= /(12), and simplify
-9 = x, or x = -9, or {-9}
Blessed Be, sorry if the format isn't looking right, when I typed it out, it looked nicer :)
參考: TLSIII
-3x-36 = 9 (x+8)
-3x-36 = 9x+72
-3x-9x = 72+36
-12x = 108
-x = 108/12
x = -108/12
So x = -9
-3x-36 = 9 (x+8)
-3x-36 = 9x+72
-3x-9x = 72+36
-12x = 108
-x = 108/12
x = -108/12
x = -9
Therefore, X = -9
-3x - 36 = 9(x + 8)
-3x - 36 = 9*x + 9*8
-3x - 36 = 9x + 72
-3x - 9x = 36 + 72
-12x = 108
x = 108/-12
x = -9
-3x-36=9(x+8)
-3x-36+9x+72
-108=12x
-108/12=x
-9=x
收錄日期: 2021-05-01 10:10:00
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