Question

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Answer 1

Explicație pas cu pas:

1. a) 4x=8

4x : 4=8:4

x=2

b)

3x+2=5

3x=5-2

3x=3

x=1

c)7x=4-3x

7x+3x=4

10x=4

$x = \frac{2}{ 5}$

x=0,4

d)4x+5=8x+5

4x=8x

4x-8x=0

-4x=0

x=0

e) 5=6x-3

-6x=-3-5

-6x=-8

$x = \frac{4}{3}$

f)4(x+2)=x+1

4x+8=x+1

4x-x=1-8

3x=-7

$x = - \frac{7}{3}$

g)

$\frac{x}{2} + \frac{1}{4} = 4$

3x+2=24

3x=24-2

3x=22

$x = \frac{22}{3}$

h)

$\frac{2}{3} - \frac{x}{3} = \frac{2x}{4}$

8-4x=6x

-4x-6x=-8

-10x=-8

$x = \frac{4}{5}$