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ayeeeee98
05.10.2019 •
Mathematics
Solve the following: -7x + 5 = 8x - 25
explain you < 3
Solved
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Ответ:
x = 2
Step-by-step explanation:
Reorder the terms:
-5 + 7x = 25 + -8x
Add '8x' to each side of the equation:
-5 + (7x + 8x) = 25 + (-8x + 8x)
Combine like terms: 7x + 8x = 15x :
-5 + 15x = 25 + -8x + 8x
Combine like terms: -8x + 8x = 0
-5 + 15x = 25 + 0
-5 + 15x = 25
Combine like terms: 25 + 5 = 30 :
15x = 30
Divide each side by '15':
x = 2
Ответ: