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a fost răspuns

Dau coroana:
5X+19-2(x+7)=5(2X+5)+22

7X-9(2X+3) + 38=4(3X+8)+25

5(3X-2)+4(5X-9)=7(2X-5)+10

6(4X-9)-7(2X-3)=5(3X+8)+22

Sunt ecuatii.

Răspuns :

Ahmed1985
1))
5x+19-2x-14=10x+25+22
= 3x+5= 10x+47
3x= 10x+47-5
3x= 10x+42
3x-10x= 42
-7x= 42
X= 42:(-7)= -6
-------------------
2))
= 7x-18x-27+38=12x+32+25
= 38-11x-27= 12x+57
= 11-11x=12x+57
-11x= 12x+57-11
= -11x= 12x+46
(-23x)= 46
X= 46:(-23)
X= -2
-------—
3))))
= 15x-10+20x-36=14x-35+10
= 35x-46= 14x-25
35x= 14x+46-25
= 35x= 14x+21
35x-14x= 21
21x=21
X= 21:21
X= 1
-------------
4)))
24x-54-14x+21=15x+40+22
10x -33= 15x+62
10x-15x= 62+33
-5x= 95
X= 95:(-5)= -19
X= (-19 )
Sper ca te am ajutat :)
Merita (((((coroana ))))

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