3 years ago

How many solutions does the equation have?

2 answers:

8 0

$3(4x-3)-7x=5x-9\\
12x-9-7x=5x-9\\
5x-9=5x-9\\
x\in \mathbb{R} \Rightarrow B$

7 0

$3(4x-3)-7x=5x-9\\\\3(4x)+3(-3)-7x=5x-9\\\\12x-9-7x=5x-9\\\\\boxed{5x-9=5x-9}\\\\conclusion:\boxed{B.\ infinite\ solutions}$

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Hey there!

You can use subtraction:

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Hope this helps
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