2 years ago

3x + 45 = 4x + 21 Solve for 'x'.

Mathematics

2 answers:

Naya [18.7K]2 years ago

6 0

Answer:

Step-by-step explanation:

$3x + 45 = 4x + 21 \\ collect \: like \: terms \\ 3x - 4x = 21 - 45 \\ - x = - 24$

$x = 24$

guajiro [1.7K]2 years ago

4 0

Answer:

Step-by-step explanation:

3x + 45 = 4x + 21

45 - 21 = 4x - 3x

24 = x

You might be interested in

What is (x - 4y) (-3x - 2y) = ?

Artemon [7]

The answer is -3x^2+10xy+8y^2

3 0

3 years ago

I need some help with this one

Mrac [35]

Answer:

300+90+9

-45=0+40+5

Step-by-step explanation:

399-45=354

8 0

2 years ago

Read 2 more answers

What are the solution(s) to the quadratic equation 9x2 = 4?

Kaylis [27]

Answer:

Option B.

Step-by-step explanation:

The given quadratic equation is

$9x^2=4$

We need to find the solution of given quadratic equation.

Divide both sides by 9.

$\frac{9x^2}{9}=\frac{4}{9}$

$x^2=\frac{4}{9}$

Taking square root on both sides.

$x=\pm\sqrt{\frac{4}{9}}$

$x=\pm\frac{2}{3}$

The solution of given equation are $x=\frac{2}{3}$ and $x=-\frac{2}{3}$ .

Therefore, the correct option is B.

6 0

3 years ago

Read 2 more answers

What is the slope and y-intercept of a vertical line

Dmitry_Shevchenko [17]

Is there any numbers or a picture

7 0

3 years ago

Pls pls pls help me this is due soon

Thepotemich [5.8K]

Answer:

x+18

Step-by-step explanation:

6 0

3 years ago