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Cailyn Mckenzie
Mathematics
16 November, 00:00
Solve for x: 12x-20=6 (x-20) - 9x
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Kael Hayden
16 November, 00:13
0
Step-by-step explanation:
Answer:
Step-by-step explanation:
12x - 20 = 6 (x - 20) - 9x
pay attention to the brackets as you simplify.
Let's work on it:
12x - 20 = 6x - 120 - 9x
Collecting like terms to further simplify the equation.
12x - 6x + 9x = - 120 + 20
15x = - 100
Let's make x the subject formula by dividing through by 15
Therefore:
x = - 100 / 15
Divide through by 5
x = - 20 / 3
Since nothing can easily divide through, we turn it to a mixed fraction
x = - 6 2/3
(Minus six whole number, two divided by three)
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Ryland Mayer
16 November, 00:29
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Step-by-step explanation:
12x-20=6 (x-20) - 9x
Opening bracket
12x - 20 = 6x - 120 - 9x
Collecting like terms
12x - 6x + 9x = - 120 + 20
15x = - 100
Dividing by 15
15x/15 = - 100/15
x = - 20/3
x = - 6 2/3
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