Question

rezolva ecuatile a)x+x+x=6 b)3×x+4=2×x+11 c)2×(x+3)=6

Answer 1

a) x+x+x=6 <=> 3x=6 |:3 <=> x=2 <=> S={2}
b)3*x+4=2*x+11 <=> 3x-2x=11-4<=> x=7 <=> S={7}
c)2*(x+3)=6 | :2 <=> x+3=3 <=> x=3-3 <=> x=0 <=> S={0}
Sper ca te-am ajutat !

Answer 2

a) $x+x+x=3\cdot x = 6\implies x = 6:3 = 2$

b) $3\cdot x + 4 = 2\cdot x + 11\implies x + 4 = 11\implies x = 11 -4=7$

c) $2\cdot (x+3) = 6 \implies x + 3 = 6:2 = 3\implies x = 3-3=0$