Question

Rezolvatim ambele va rog frumos

Answer 1

Bună !

Primul exercițiu :

• a)x+5= -4 => x= - 4-5 => x= - 9
• b) x+6= -3 => x=-3-6 => x= - 9
• c) x+2= -9 => x=-9-2 => x= -11
• d) x-1= - 4 => x=-4+1 => x= -3
• e) x-8= -2 => x=-2+8 => x=6
• f) x-6 =2 => x=6+2 => x=8
• g) 5= -4+x => x=5+4 => x=9
• h) 7=x+14 => x=7-14 => x= -7
• i)-3= -1+x => x=-3+1 => x= - 2
• j) 2x= -4 => x=-4/2 => x= - 2
• k) 5x= -20 => x= -20/5 => x= - 4
• l) -4x=8 => x=8:(-4) => x= -2
• m) -9x=27 => x=27:(-9) => x= -3
• n) x:3= -4 => x= - 4 *3 => x= -12
• o) x:(-2)= -6 => x=(-6)*(-2)= > x=12
• p) x : (-8) =2 => x=2*(-8) => x= -16

Exercițiul al dolea :

• a) 2x+1= -7 => 2x= -8 => x= - 4
• b) 3x-1 =13 => 3x= -12 => x= - 4
• c) 2x+15=5 => 2x= -10 => x= -5
• d) 2x+10=0 => 2x=-10 => x=-10/2 => x= - 5
• e) 3x+24=0 => 3x= -24 => x=-24/3 => x= - 8
• f) -2x+1=7 => -2x=-8 => x=4
• g) -3x+1= - 14 => -3x=-14-1 => -3x=-15 => x=5
• h) 3+2x= -7 => 2x= -7-3 => 2x= -10 => x= - 5
• j) 5+2x= -11 => 2x=-11-5 => 2x= -16 => x= - 8
• k) 6+3x= -54 => 3x=-54-6 => 3x= - 60 => x= -20
• l) 1+9x= -89 => 9x=-89 -1 => 9x= -90 => x= -90/9 => x= -10
• m) 1-2x= -7 => 2x=1-(-7) => 2x=8 => x=8/2 => x=4
• n) 5-4x= -3 => 4x=5-(-3) => 4x=8 => x=8/4 => x=2
• o) 1-6x= -11 => 6x=1-(-11) => 6x=1+11 => 6x=12 => x=12/6 => x=2
• p) 1-5x=-19 =>5x=1-(-19) =>5x=20 =>x=4