👤
a fost răspuns

a)10(3x-1)=3(2-5x) b)4(3x+5)+3(3x-12)=5 c)5x+5=3(10x-3) d)3(4x-3)-(3x+1)=7

Răspuns :

a.
30x-10=6-15x
30+15x=6+10
45x=16
x=16/45

b.
12x+20+9x-36=5
21x-16=5
21x=21
x=1

c.
5x+5=30x-9
5+9=30x+5x
14=35x
x=14/35
x=2/5

d.
12x-9-3x-1=7
9x-10=7
9x=7+10
9x=17
x=17/9



Alte intrebari