Question

1)Rezolvati in multimea numerelor reale ecuatiile:
a)x+7=11
b)x-8=10
c)x+4=17
d)x-5=14
e)15+x=8
f)x-2=-7
g)x+31=9
h)x-6=-5
2)Rezolvati urmatoarele ecuatii,unde x este nr.real nenul:
a)x:4=11
b)x:5=10
c)x:(-3)=5
d)x:(-7)=-8
e)16:x=20
f)15:x=25
g)27:x=-36
h)-24:x=-8
Plss imi trebuie neaparat aveti 65 de puncte de la mn!

Answer 1

Fa click pe poza succes.☺

Answer 2

1) a)
x+7=11
x=11-7
x=4
P:4+7=11
b)x-8=10
x=10-8
x=2
P:2+8=10
c)x+4=17
x=17-4
x=13
P:13+4=17
d)x-5=14
x=14+5
x=19
P:19-5=14
e)15+x=8
x=15-8
x=7
P:15-78
f)x-2=-7
x=-7+2
x=-5
P:-5-2=-7
g)x+31=9
x=9-31
x=-22
P:-22+31=9
h)x-6=-5
x=-5+6
x=1
P:1-6=-5

2) a)x:4=11
x=11×4
x=44
P:44:4=11
b)x:5=10
x=10×5
x=50
P:50:5=10
c)x:(-3)=5
x=5×(-3)
x=-15
P:-15:(-3)=5
d)x:(-7)=-8
x=-8×(-7)
x=56
P:56:(-7)=-8
e)16:x=20
x=16:20
x=0,8
P=16:0,8=20
f)15:x=25
x=15:25
x=0,6
P:15:0,6=25
g)27:x=36
x=27:36
x=0,75
P:27:0,75=36
h) -24:x=-8
x=-24:(-8)
x=3
P:-24:3=-8