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Mathematics
Terrance Heath
29 March, 20:47
How to solve this equation 5x-4-7x=4
+4
Answers (
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)
Kelsey Frye
29 March, 22:36
0
x = - 4
Step-by-step explanation:
Simplifying
5x + - 4 = 7x + 4
Solving
-4 + 5x = 4 + 7x
Move all terms containing x to the left, all other terms to the right.
Add '-7x' to each side of the equation.
-4 + 5x + - 7x = 4 + 7x + - 7x
Combine like terms: 5x + - 7x = - 2x
-4 + - 2x = 4 + 7x + - 7x
Combine like terms: 7x + - 7x = 0
-4 + - 2x = 4 + 0
-4 + - 2x = 4
Add '4' to each side of the equation.
-4 + 4 + - 2x = 4 + 4
Combine like terms: - 4 + 4 = 0
0 + - 2x = 4 + 4
-2x = 4 + 4
Combine like terms: 4 + 4 = 8
-2x = 8
Divide each side by '-2'.
x = - 4
Simplifying
x = - 4
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