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Mathematics
Dennis Randall
28 December, 07:24
5 (x-1) + 3=7 (x+1)
What is the solution?
+4
Answers (
1
)
Adriel Pennington
28 December, 10:36
0
Expand
5x - 5 + 3 = 7x + 7
Simplify 5x - 5 + 3 to 5x - 2
5x - 2 = 7x + 7
Subtract 5x from both sides
-2 = 7x + 7 - 5x
Simplify 7x + 7 - 5x to 2x + 7
-2 = 2x + 7
Subtract 7 from both sides
-2 - 7 = 2x
Simplify - 2 - 7 to - 9
-9 = 2x
Divide both sides by 2
-9/2 = x
Switch sides
x = - 9/2
- (Decimal Form: - 4.5)
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