Question

Rezolvati in Q ecuatiile:
a)4x-3=0
b)2-5x=12
c)3/4x-2=7
d)-2intregi si1/2x=x+5intregi si1/4
e)2,25-3,2x=3,5-2,2x-1,25

Answer 1

a)4x-3=0|+3
4x=3|:4
x=3/4
b)2-5x=12|-2
-5x=10|:5
-x=10/5
x=-2
c)3/4x-2=7|+2
3/4x=9|:3/4
x=9*4/3
x=12
d)-2*1/2x=x+5*1/4
-2x=x+5|-x
-3x=5|:(-3)
x=-5/3
e)2.25-3.2x=3.5-2.2x-1.25|+2.2x
2.25-x=2.25
x=0