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Mathematics
Noodle
25 April, 12:56
What is the variable x in 40+10x=5x-30
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Kayden Barrett
25 April, 13:49
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40 + 10x = 5x - 30
To begin isolating x, subtract 40 from both sides.
40 + 10x - 40 = 5x - 30 - 40
10x = 5x - 70
Subtract 5x from both sides.
10x - 5x = 5x - 70 - 5x
5x = - 70
Finally, divide both sides by 5.
5x/5 = - 70/5
x = - 14
Answer:
x = - 14
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