Answered

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A) 10s + 7t = 149
5s + 7t = 99

Sagot :

Kittyhacker14

Answer:

s = [tex]\frac{149}{10} - \frac{7t}{10}[/tex]

t = [tex]\frac{149}{10} -\frac{10s}{7}[/tex]

Step-by-step explanation:

(Hope this helps can I pls have brainlist (crown)☺️)

[tex]10s + 7t = 149 \\ 10s + 7t + - 7t = 149 + - 7t \\ 10s = - 7t + 149 \\ \frac{10s}{10} = \frac{ - 7t + 149}{10} \\ \boxed{s = \frac{ - 7}{10} t + \frac{149}{10} }[/tex]

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[tex]5s+7t=99 \\ 5s+7t+−7t=99+−7t \\ 5s=−7t+99 \\ \frac{5s}{5} = \frac{ - 7 + 99}{5} \\ \boxed{s = \frac{ - 7}{5} t + \frac{99}{5} }[/tex]

correct me if I'm wrong.

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