Question

Help me plz:

11. Solve the following equations:
a. 5(x - 4) = 10
b. 2x(4x + 3x) = 21
c. 3(4 - 2x) = 28
d. 10x(2 + 13) = 300

Answer 1

Here is the answer’s

Answer 2

`\huge \bf༆ Answer ༄`

Let's solve ~

A. 5(x - 4) = 10

• 
  `\sf5(x - 4) = 10`

• 
  `\sf(x - 4) = 10 / 5`

• 
  `\sf \: x - 4 = 2`

• 
  `\sf x = 2 + 4`

• 
  `\sf x = 6`

B. 2x(4x + 3x) = 21

• 
  `\sf2x(4x + 3x) = 21`

• 
  `\sf2x(7x) = 21`

• 
  `\sf14 {x}^(2) = 21`

• 
  `\sf {x}^(2) = 21 / 14`

• 
  `\sf x {}^(2) = (3)/(2)`

• 
  `\sf x = \sqrt{ (3)/(2) }`

C. 3(4 - 2x) = 28

• 
  `\sf3(4 - 2x) = 28`

• 
  `\sf12 - 6x = 28`

• 
  `\sf - 6x = 28 - 12`

• 
  `\sf x = 16 / - 6`

• 
  `\sf x = - (8)/(3)`

D. 10x(2 + 13) = 300

• 
  `\sf 10x(2 + 13) = 300`

• 
  `\sf10x(15) = 300`

• 
  `\sf10x = 300 / 15`

• 
  `\sf x = 20 / 10`

• 
  `\sf x = 2`

I hope it helps ~