Question Number 203995 by 0977460907 last updated on 03/Feb/24
$$\mathrm{3}{x}+\mathrm{4}{x}=\mathrm{5} \\ $$
Answered by SonGoku last updated on 03/Feb/24
$$\: \\ $$$${x}\left(\mathrm{3}+\mathrm{4}\right)=\mathrm{5} \\ $$$${x}\left(\mathrm{7}\right)=\mathrm{5} \\ $$$$\mathrm{7}{x}=\mathrm{5} \\ $$$$\mathrm{7}\left(\frac{\mathrm{1}}{\mathrm{7}}\right){x}=\mathrm{5}\left(\frac{\mathrm{1}}{\mathrm{7}}\right) \\ $$$$\cancel{\mathrm{7}}\left(\frac{\mathrm{1}}{\cancel{\mathrm{7}}}\right){x}=\frac{\mathrm{5}}{\mathrm{7}} \\ $$$${x}=\frac{\mathrm{5}}{\mathrm{7}} \\ $$$$\begin{array}{|c|}{\therefore\:{x}=\frac{\mathrm{5}}{\mathrm{7}}}\\\hline\end{array} \\ $$
Answered by Skabetix last updated on 03/Feb/24
$$\mathrm{7}{x}=\mathrm{5} \\ $$$${x}=\frac{\mathrm{5}}{\mathrm{7}} \\ $$
Answered by SWPlaysMC last updated on 04/Feb/24
$$\mathrm{Assuming}\:\mathrm{you}\:\mathrm{want}\:\mathrm{to}\:\mathrm{solve}\:\mathrm{for}\:{x}… \\ $$$$\mathrm{3}{x}+\mathrm{4}{x}=\mathrm{7}{x}\:\:\:\:\:\mathrm{combine}\:\mathrm{like}\:\mathrm{terms} \\ $$$$\mathrm{7}{x}=\mathrm{5}\:\:\:\:\:\:\:\:\mathrm{simplify} \\ $$$$\frac{\mathrm{7}{x}}{\mathrm{7}}=\frac{\mathrm{5}}{\mathrm{7}}\:\:\:\:\:\mathrm{divide}\:\mathrm{by}\:\mathrm{7}\:\mathrm{on}\:\mathrm{both}\:\mathrm{sides} \\ $$$${x}=\frac{\mathrm{5}}{\mathrm{7}}\:\:\:\:\:\mathrm{answer} \\ $$