Question

cum fac ecuatia asta in R
a)4x-3*(2x-1)=9
b)5-2*(3x-4)=7x
c)6-5*(2x-1)=1
d)7x-4*(3x-2)=3
e)2x-6*(2x-3)=8
f)3x-2*(4x-1)=12
va ro mult!!
steluta este in loc de inmultire

Answer 1

a) 4x-3•(2x-1)=9
4x-6x+3-9=0
-2x-6=0
x=-3
b)5-2•(3x-4)=7x
5-6x+8-7x=0
-13x=13
x=-1
c)6-5•(2x-1)=1
-10x+5=-5
-10x=-10
x=1
d)7x-4•(3x-2)=3
7x-12x+8=3
-5x=3-8
-5x=-5
x=1
e)2x-6•(2x-3)=8
2x-12x+18=8
-10x=8-18
-10x=-10
x=1
f)3x-2•(4x-1)=12
3x-8x+2=12
-5x=10
x=-2