Question

Rezolvati ecuatiile:
a)5x+3(x-6)=7x+13
b)6x+4(x-8)=9x+21
c)5(x-7)-2x=x-41
d)7(x-9)-4x=x-39
e)4(x+5)-3(x-3)=2(x+15)
f)5(x+2)-4(x-2)=3(x+8)
g)2[15+3(x-1)]=4(x+7)
h)2[(4x-2)+16]=6(x+5)
URGENT!!!!!!

Answer 1

a) 5x+3x-18=7x+13
8x-18=7x+13
8x-7x=13+18
x=31
b) 6x+4x-32=9x-21
10x-32=9x+21
10x-9x=21+32
x=53
c) 5x-35-2x=x-41
3x-x=41+35
2x=76:2
x=38
d) 7x-63-4x=x-39
3x-x=39+63
2x=102:2
x=51
e)4x+20-3x-9=2x+31
x-11=2x+30
x-2x=30-11
-x=19
f)5x+10-4x-8=3x+24
x+2=3x+24
x-2x=24-2
-x=11
g)2(15+3x-3)=4x+28
30+6x-6=4x+28
24+6x=4x+28
6x-4x=28-24
2x=4:2
x=2
h)8x-4+32=6x+30
8x+28=6x+30
8x-6x=30-28
2x=2
x=1