Olka11293883883viz
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Błagam was kochani wierze w was

Błagam Was Kochani Wierze W Was class=

Odpowiedź :

Wiktoria6445viz

Odpowiedź:

a) 10x+4=7/-4

10x=3 /:10

x=0,3

b)4x-3=9 /+3

4x=12 /:4

x=3

c)-2x+2= -7 /-2

-2x= -9 /:2

x=4,5

d)6x+5=4x /-6x

5=-2x

2x=5 /:2

x= -2,5

e)9x-3=2x+5 /-2x

7x-3=5 /+3

7x=8 /:7

x=1,14

f) -3x+4=-5x-1 /+5x

2x+4=-1 /-4

2x= -5 /:2

x= -2,5

Maciej3291viz

[tex]10x + 4 = 7 | - 4 \\ 10x = 3 | \div 10 \\ x = 0.3 \\ \\ 4x - 3 = 9 | + 3 \\ 4x = 12 | \div 4 \\ x = 3 \\ \\ - 2x + 2 = - 7 | - 2 \\ - 2x = - 9 | \div - 2 \\ x = 4.5 \\ \\ 6x + 5 = 4x | - 6x \\ 5 = - 2x | \div - 2 \\ - 2.5 = x \\ \\ 9x - 3 = 2x + 5 | - 2x \\ 7x - 3 = 5 | + 3 \\ 7x = 8 | \div 7 \\ x = 1 \frac{1}{7} \\ \\ - 3x + 4 = - 5x - 1 | + 3x \\ 4 = - 2x - 1 | + 1 \\ 5 = - 2x | \div - 2 \\ x = - 2.5[/tex]

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