marahsenno
29.06.2019 •
Mathematics
Let f(x)=4x-7 and g(x)=-3x+2. find (f-g)(x)
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Ответ:
7x-9
Step-by-step explanation:
Substitue into one equation.
(f) - (g)
(4x-7) - (-3x+2)
Distribute negative through g(x)
(4x-7) + 3x-2
Simplify
4x-7 + 3x-2
7x-7-2
7x-9
Ответ:
B) 3 1/2 or 7/2
Step-by-step explanation:
4 3/7=31/7
3 1/2=7/2
31/7x-7/2=12
31/7x=12+7/2
31/7x=24/2+7/2
31/7x=31/2
x=(31/2)/(31/7)
x=(31/2)(7/31)
x=7/2