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morpeh [17]
3 years ago
5

How do I solve this equation? If 3t-7=5t then 6t=a 21b-7c-21d-42

Mathematics
1 answer:
Ugo [173]3 years ago
5 0
3t-7=5t \ \ \ \ \ |\hbox{subtract 3t} \\
-7=2t \ \ \ \ \ \ \ \ |\hbox{multiply by 3} \\
-21=6t \\ \\
\boxed{6t=-21} \\
\hbox{answer C}
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Answer:

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Step-by-step explanation:

In order to determine if the slopes are the same, put all of the equations in slope-intercept form:  y = mx + b.  In order for lines in this form to be parallel, the m values of each have to be the exact same number, in our case, 4.  Equation 2 has a 4 in the m position, just like the given, so that one is easy.  Equation 2 is parallel.

Let's solve the third equation for y:

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3 years ago
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2 years ago
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