Question

Resolver las siguientes ecuaciones : 2 (x-4)=x+7 , 7 (x-1)=3x+1 , (x+2).6=2(10+x) , (35x-50)÷5=2x+15

Answer 1

Respuesta:

x= 15

x = 2

x = 2

x = 5

Explicación paso a paso:

1) 2(x-4) = x+7

2x - 8 = x +7

2x - x = 8+7

x = 15

2) 7(x-1) = 3x+1

7x - 7 = 3x + 1

7x - 3x = 7 + 1

4x = 8

x = 8/4

x = 2

3) (x+2).6 = 2(10+x)

6x + 12 = 20 + 2x

6x - 2x = -12 + 20

4x = 8

x = 8/4

x = 2

4) (35x-50)÷5 = 2x+15

$\frac{35x - 50}{5} = 2x + 15$

$\frac{5(7x - 10)}{5} = 2x + 15$

$7x - 10 = 2x + 15$

$7x - 2x = 15 + 10$

$5x = 25$

X = 25/5

x = 5