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Mathematics
Savion Calhoun
4 March, 19:01
3x+2-5x=10 what is X
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Braylen Lin
4 March, 20:16
0
x = - 4
Step-by-step explanation:
Solve for x:
3 x - 5 x + 2 = 10
Grouping like terms, 3 x - 5 x + 2 = 2 + (3 x - 5 x):
2 + (3 x - 5 x) = 10
3 x - 5 x = - 2 x:
-2 x + 2 = 10
Subtract 2 from both sides:
(2 - 2) - 2 x = 10 - 2
2 - 2 = 0:
-2 x = 10 - 2
10 - 2 = 8:
-2 x = 8
Divide both sides of - 2 x = 8 by - 2:
(-2 x) / (-2) = 8 / (-2)
(-2) / (-2) = 1:
x = 8 / (-2)
The gcd of 8 and - 2 is 2, so 8 / (-2) = (2*4) / (2 (-1)) = 2/2*4 / (-1) = 4 / (-1):
x = 4 / (-1)
Multiply numerator and denominator of 4 / (-1) by - 1:
Answer: x = - 4
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