Question

rezolvati in multimea numerelor rationale ecuatiile:
a)2x+1=4
b)3x-1=6
c)4x+2=7
d)15-4x=17
e)27-6x=36
f)-5x+9+12
Si aveti coroana pentru cel mai bun raspuns

Answer 1

a) 2x+1=4
2x=4-1
2x=3
x=3/2

b) 3x-1=6
3x=6+1
3x=7
x=7/3

c) 4x+2=7
4x=7-2
4x=5
x=5/4

d) 15-4x=17
-4x=17-15
-4x=2 /-1
4x=-2
x=-2/4
x=-1/2

e) 27-6x=36
-6x=36-27
-6x=9 /-1
6x=-9
x=-9/6
x=-3/2

f) -5x+ 9=12
-5x=12-9
-5x=3 /-1
5x=-3
x=-3/5

Sper ca te-am ajutat :))