Question

x ori 3 =x+4

x+100=3x

(x ori 2)

(x+3) ori 9

x ori 5+4= (x+3) ori 4

cat este x? cu rezolvare va rog

Answer 1

3X=X+4⇒3X-X=4⇒2X=4⇒X=4:2⇒X=2
X+100=3X⇒2X=100⇒X=50
(X+3)·9=9X+27⇒X=-3
5X+4=4X+12⇒X=8

Answer 2

a)x ·3= x+4      
3x-x=4
2x=4
x=4/2
x=2

b) x+100=3x
   100=3x-x
    100=2x
x=100/2
x= 50

c)x·2 =2x
d) x·5+4=(x+3) ·4
5x+4=4x+12
5x-4x=12-4
x=8