lucky1940

lucky1940

21.01.2020 •

Mathematics

Ccss common core spil
find each function value. 8.f.1
22. f(5) if f(x) = 3x + 4

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Ответ:

eliana12

25.04.2021

$\longrightarrow{\green{x\:=\:6}}$

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}$

➝ $\:\frac{3x + 2}{4} = \frac{x + 4}{2}$

➝ $\: 2(3x + 2) = 4(x + 4)$

➝ $\: 6x + 4 = 4x + 16$

➝ $\: 6x - 4x = 16 - 4$

➝ $\:2x = 12$

➝ $\: x = \frac{12}{2}$

➝ $\: x = 6$

Therefore, the value of is 6.

$\large\mathfrak{{\pmb{\underline{\blue{To\:verify}}{\blue{:}}}}}$

➪ $\: \frac{3x + 2}{4} = \frac{x + 4}{2}$

➪ $\:\frac{3 \times 6 + 2}{4} = \frac{6 + 4}{2}$

➪ $\:\frac{18 + 2}{4} = \frac{10}{2}$

➪ $\:\frac{20}{4} = 5$

➪ $\: 5 = 5$

➪ $\: L.H.S.=R. H. S$

Hence verified.

$\huge{\textbf{\textsf{{\orange{My}}{\blue{st}}{\pink{iq}}{\purple{ue}}{\red{35}}{\green{❦}}}}}$

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