Question

Resuelva las siguientes ecuaciones: a) 5x – 3 = 21 - x b) 3x – 4 = 24 – x c) 2x + 3x + 4x = 58 – 20x

Answer 1

a) 5x - 3 = 21 - x

Simplificamos

5x + x = 21 + 3
6x = 22
x = $\frac{22}{6}$
x = 3.67

b) 3x - 4 = 24 - x

Simplificamos y despejamos

3x + x = 24 + 4
4x = 28
x = 28/4
x = 7

c) 2x + 3x + 4x = 58 - 20x

Simpliicamos y despejamos x

2x + 3x + 4x + 20x = 58
29x = 58
x = 58/29
x = 2

Saludos! =)

Answer 2

A) 5x - 21 = 21-x
5x + x = 21 + 21
6x = 42
X = 7

B) 3x - 4 = 24 - x
3x + x = 24 + 4
4x = 28
x = 7

C) 2x + 3x + 4x = 58 - 20x
9x + 20x = 58
29x=58
X= 58/29
X = 2