Ash1212
20.08.2019 •
Mathematics
What is the answer to -2(2f-4)=-4(-f+2)
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Ответ:
Distribute the -2, multiplying it to each term inside the parentheses.
(-2 × 2f = -4f, and -2 × -4 = 8 because the double negatives cancel)
-4f+8 = -4(-f+2)
Now distribute the -4...
(-4 × -f = 4f, and -4 × 2 = -8)
-4f+8 = 4f-8
Add 4f to each side so that our variable is on just one side of the equation.
8 = 8f-8
To get rid of that -8 and isolate our variable, add 8 to each side.
16 = 8f
Divide each side by 8 to get the value of f.
2 = f
Ответ:
(−2)(2f)+(−2)(−4)=(−4)(−f)+(−4)(2)(Distribute)
−4f+8=4f+−8
−4f+8=4f−8
Subtract 4f from both sides.
−4f+8−4f=4f−8−4f
−8f+8=−8
Subtract 8 from both sides.
−8f+8−8=−8−8
−8f=−16
Divide both sides by -8.
−8f/−8=−16/−8
f=2
Ответ: