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a fost răspuns

2x=8
4x+=0
3x-15=0
25-4(2x-3)=16+(5x-4) ori 2

Răspuns :

2x=8
x=8/2
x=4

3x-15=0
3x=15
x=15/3
x=5

25-4(2x-3)=16+(5x-4)·2
25-8x+12=16+10x-8
37-8x=10x+8
-8x-10x=8-37
-18x=-29     ·(-1)
x=29/18
x=-1,6(1)
Concescu10
25-8x+12=16+10x-8
-8x-10x=16-8-25-12
-18x=-29/-1
18x=29
x= 29/18
x=1,6(1)

2x=8
x=8/2
x=4

3x-15=0
3x=15
x=15/3
x=5