Question

rezolva in mulțimea z ecuațiile: a)2x-3=1 b)5-3x=-1 c)13=3x4 d)-27=6x-3 e)5(x-8)=4x-39 f)-4+3(x+5)=10 g)2(x-1)=3(x+4) g)2(x-1)=3(x+4)​

Answer 1

a) 2x-3=1 b) 5-3x=-1 c)4+3x=13

2x=1+3 3x=-1-5 3x=13-4

2x=4 3x=-6 3x=9

x=2 x=-2 x=3

d)-27=6x-3

-27+3=6x

-24=6x

x=-4

e) 5(x-8)=4x-39 f)-4+3(x+5)=10

5x-40=4x-39 -4+3x+15=10

5x-4x=-39+40 -11+3x=10

x=1 3x=10+11

3x=21

x=7

g)2(x-1)=3(x+4)

2x-2=3x+12

-12-2=3x-2x

-14=x

Succes! ^^