Question

Va rog!!
Rezolvati in N ecuatiile:
a) 4x=3x+2
b) 9x-3=8x
c) 2x+7=x+11
d) 6x-2+x=6x+9
e) 15=3x+9
f) 6x+12=4x+20
g) 4(x+14)=106-x
h) 3(x+2)+3=2x+10
i) 2x=x+8
j) x+6+2(x-1)=x+40
k) 8x+5-4x=41+3x
l) 4(x+5)=3(x+5)+20.
VA ROG DIN SUFLET :( IMI TREBUIE URGENT. Va rog!!

Answer 1

[tex]a) 4x=3x+2\\4x-3x=2\\ x=2\\ b) 9x-3=8x\\ 9x-8x=3\\ x=3\\ c) 2x+7=x+11\\ 2x-x=11-7\\x=4\\ d) 6x-2+x=6x+9\\ 6x+x-6x=9+2\\ x=11\\ e) 15=3x+9\\3x=15-9\\ 3x=6\\ x=6:3\\ x=2\\ f) 6x+12=4x+20 \\ 6x-4x=20-12\\ 2x=8\\x=8:2\\ x=4\\ g) 4(x+14)=106-x\\ 4x+56=106-x\\ 4x+x=106-56\\ 5x=50\\x=50:5\\x=10\\ h) 3(x+2)+3=2x+10\\ 3x+6+3=2x+10\\ 3x-2x=10-9\\ x=1\\ i) 2x=x+8\\ 2x-x=8\\ x=8\\ j) x+6+2(x-1)=x+40\\ x+6+2x-2=x+40\\ x+2x-x=40-6+2\\2x=36\\ x=36:2\\x=18\\ k) 8x+5-4x=41+3x\\ 8x-4x-3x=41-5\\x=36\\[/tex]
$l) 4(x+5)=3(x+5)+20\\ 4x+20=3x+15+20\\ 4x-3x=15+20-20\\ x=15$

Answer 2

a). 4x-3x=2; x=2
b). 9x-8x=3; x=3
c). 2x-x=11-7; x=4
d). 6x+x-6x=9+2; x=11
e). 15-9=3x; 6=3x; x=6:3; x=2
f). 6x-4x=20-12; 2x=8; x=8:2; x=4
g). 4x+56=106-x; 4x+x=106-56; 5x=50; x=50:5; x=10
h). 3x+6+3=2x+10; 3x-2x=10-6-3; x=1
i). 2x-x=8; x=8
j). x+6+2x-2=x+40; x+2x-x=40-6+2; 2x=36; x=36:2; x=18
k). 8x-4x-3x=41-5; x=36
l). 4x+20=3x+15+20; 4x-3x=15+20-20; x=15