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Mathematics
Preston Delacruz
19 September, 23:00
9. Solve for x,
9x - 25
5x + 7
N
+3
Answers (
1
)
Ainsley Compton
20 September, 01:57
0
x = 8
Step-by-step explanation:
Simplifying
9x + - 25 = 5x + 7
Reorder the terms:
-25 + 9x = 5x + 7
Reorder the terms:
-25 + 9x = 7 + 5x
Solving
-25 + 9x = 7 + 5x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5x' to each side of the equation.
-25 + 9x + - 5x = 7 + 5x + - 5x
Combine like terms: 9x + - 5x = 4x
-25 + 4x = 7 + 5x + - 5x
Combine like terms: 5x + - 5x = 0
-25 + 4x = 7 + 0
-25 + 4x = 7
Add '25' to each side of the equation.
-25 + 25 + 4x = 7 + 25
Combine like terms: - 25 + 25 = 0
0 + 4x = 7 + 25
4x = 7 + 25
Combine like terms: 7 + 25 = 32
4x = 32
Divide each side by '4'.
x = 8
Simplifying
x = 8
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