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Sedbober [7]
3 years ago
5

Practice solving multis ASSIGNMENT Solve 3[-X + (2 x + 1)] = x-1.

Mathematics
2 answers:
WITCHER [35]3 years ago
8 0

Answer:

We need to solve this equation:

3[-x + (2 x + 1)] = x-1

Firstly, we remove the parenthesis, as it's getting summed and it isn't necessary:

3[-x+2x+1]=x-1

Now we operate the brackets:

3(x+1)=x-1

We calculate tha prenthesis:

3x + 3 = x - 1

And finally, we substract x and 3 on both sides. a

3x + 3 - x - 3 = x - 1 -x - 3

2x = -4

\bold{x = \frac{-4}{2} = -2}

Now, we can verify for x = -2:

3[-(-2)+(2*(-2)+1)]=-3

3[2+(-4+1)]=-3

3[2+(-3)]=3

3[2-3]=-3

3[-1]=-3 TRUE

ehidna [41]3 years ago
6 0

...............................

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