Question

Va rog sa ma ajutați!!!!! Va rog mult! Mulțumesc!

Answer 1

a)8x-40-3x-3=2x+43
5x-43=2x+43
3x=86=>x=86/3

b)-3x+15-4=5-3x-15
11=-10
Ecuatie incompatibila

c)10x+20-2¹⁰:2¹⁰=3x-2
10x+20-1=3x-2
7x=-21=>x=-3

d)2x+4=x-3
x=-7

-2x-4=-x+3
-x=7<=>x=-7

e)l-2+x-15l=l-1l
17-x=1
x=16

-17+x=1
x=18