What is the answer to 7x-3(5x-4)=20 ?

The answer to 7x-3(5x-4)=20 is x=-1

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

7x-3(5x-4)=20

7 x - 3 (5 x - 4) = 20

x = - 1

Solution steps

7 x - 3 (5 x - 4) = 20

Expand

- 3 (5 x - 4) : - 15 x + 12

7 x - 15 x + 12 = 20

Add similar elements:

7 x - 15 x = - 8 x

- 8 x + 12 = 20

Move

12

to the right side

- 8 x = 8

Divide both sides by

- 8

x = - 1

y^{3} - 3 y^{2} + 4 y - 12

- 5 + 7

5 x^{2} + 3 x \geq 3 x^{2} + 2

\frac{15 !}{3 ! 12 !}

\frac{m}{2} - 1 \geq 1