Question

encuentra el valor de x de los siguientes problemas
3x + 2x = 50
5x - 2x = 60
18x + 4 = 40
1/2x + 5 = 10
14x + 6 = 90

Answer 1

Respuesta:

$3x + 2x = 50 \\ 5x = 50 \\ x = 5 0 \div 5 \\ x = 10$

$5x - 2x = 60 \\ 3x = 60 \\ x = 60 \div 3 \\ x = 20$

$18x + 4 = 40 \\ 18 x= 40 - 4 \\ 18x = 36 \\ x = 36 \div 18 \\ x = 2$

$\frac{1}{2} x + 5 = 10 \\ \frac{1}{2} x = 10 - 5 \\ \frac{1}{2} x = 5 \\ x = 5 \div \frac{1}{2} \\ x = 10$

$14x + 6 = 90 \\ 14x = 90 - 6 \\ 14x = 84 \\ x = 84 \div 14 \\ x = 6$

Answer 2

2. $3x + 2x = 50 \\ 5x = 50 \\ x = 50 \div 5 \\ x = 10$
3. $5x - 2x = 60 \\ 3x = 60 \\ x = 60 \div 3 \\ x = 20$
4. $18x + 4x = 40 \\ 22x = 40 \\ x = \frac{40}{22} \\ x = \frac{20}{11}$
5. $\frac{1}{2}x + 5 = 10 \\ \frac{1}{2} x = 10 - 5 \\ \frac{1}{2} x = 5 \\ x = 5 \times 2 \\ x = 10$
6. $14x + 6 = 90 \\ 14x = 90 - 6 \\ 14x = 84 \\ x = 84 \div 14 \\ x = 6$