Solve for x. - 1 = 3x - 7 Simplify your answer as much as possible. X =

Mathematics

2 answers:

Maurinko [17]3 years ago

5 0

Answer:

x=2

Step-by-step explanation:

-1=3x-7

Add both sides by 7 to isolate 3x

-1+7=3x-7+7

6=3x

Divide both sides by 3 to isolate x

6/3=3x/3

2=x

I hope this helps!

SVEN [57.7K]3 years ago

4 0

Answer:

x=2

Step-by-step explanation:

-1=3x-7

-1+7=3x

6=3x

x=6

3

x=2

hope it helps.

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So, since we have a cubic equation with 4 terms, the first thing we should try is factoring by grouping, so:

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$2x^2-5 = 0 \implies \\ 2x^2=5 \implies\\ x^2=\frac{5}{2} \implies\\ x=\pm\frac{\sqrt{5}}{\sqrt{2}}=\pm\frac{\sqrt{10}}{2} \\ \\ 6x+1 =0 \implies \\ 6x=-1 \implies\\ x=\frac{-1}{6}$