x-5x + 4(x - 2) = 3x - 8?
回答 (9)
✔ 最佳答案
x - 5x + 4x - 8 = 3x - 8
- 3x = 0
x = 0
that is plenty more suitable accessible than you imagine. in simple terms look at each and every time period (x^2, x and the constants) one after the other. so that you get: = (3x^2 - x^2) + (-5x - 4x) + (8 - a million) = 2x^2 - 9x + 7 in case you comprehend the tactic, you need to have the ability to purpose this devoid of any written determining.
x-5x+4(x-2)=3x-8
x-5x+4x-8=3x-8
x-5x+4x-3x=-8+8
x(1-5+4-3)=0
x(-3)=0
x=0/-3
x=0
Simplifying
x + -5x + 4(x + -2) = 3x + -8
Reorder the terms:
x + -5x + 4(-2 + x) = 3x + -8
x + -5x + (-2 * 4 + x * 4) = 3x + -8
x + -5x + (-8 + 4x) = 3x + -8
Reorder the terms:
-8 + x + -5x + 4x = 3x + -8
Combine like terms: x + -5x = -4x
-8 + -4x + 4x = 3x + -8
Combine like terms: -4x + 4x = 0
-8 + 0 = 3x + -8
-8 = 3x + -8
Reorder the terms:
-8 = -8 + 3x
Add '8' to each side of the equation.
-8 + 8 = -8 + 8 + 3x
Combine like terms: -8 + 8 = 0
0 = -8 + 8 + 3x
Combine like terms: -8 + 8 = 0
0 = 0 + 3x
0 = 3x
Solving
0 = 3x
Move all terms containing x to the left, all other terms to the right.
Add '-3x' to each side of the equation.
0 + -3x = 3x + -3x
Remove the zero:
-3x = 3x + -3x
Combine like terms: 3x + -3x = 0
-3x = 0
Divide each side by '-3'.
x = 0
Simplifying
x = 0
x - 5x + 4(x - 2) = 3x - 8
Expand:
x - 5x + 4x - 8 = 3x - 8
Combine Like Terms:
-2x - 8 = 3x - 8
Move things around:
-2x + 2x - 8 + 8 = 3x + 2x - 8 + 8
Simplify:
0 = 5x
x = 0
x-5x + 4(x - 2) = 3x - 8
-4x + 4x - 8 = 3x - 8
- 3x = -8 + 8
-3x = 0
x=0
:>:
do 4(x-2) first and change it to 4x-8
x-5x+4x-8=3x-8
then group them all together: x's and numbers
the x's on the left side cancel out leaving -8
-8=3x-8
-8+8=3x
0=3x
x=0
x-5x + 4(x - 2) = 3x - 8;
-4x + 4x -8 = 3x -8;
-8 = 3x -8;
x=0;
x - 5x + 4(x - 2) = 3x - 8
x - 5x + 4 * x - 4 * 2 = 3x - 8
x - 5x + 4x - 8 = 3x - 8
x - (5x - 4x) - 8 = 3x - 8
x - x - 8 = 3x - 8
-8 = 3x - 8
3x = 8 - 8
3x = 0
x = 0/3
x = 0
* = multiply
收錄日期: 2021-05-01 09:15:39
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