Răspuns :
Distribui :
3x+(5×6)-(3×6)=(2×5)x+(2×1)-(2×42)
3x+30-18=10x+2-84/-3x
30-18=7x+2-84
7x+2-84=30-18
7x+2-84=12/+84
7x+2=96/-2
7x=94/:7
13,4285714286
3x+(5×6)-(3×6)=(2×5)x+(2×1)-(2×42)
3x+30-18=10x+2-84/-3x
30-18=7x+2-84
7x+2-84=30-18
7x+2-84=12/+84
7x+2=96/-2
7x=94/:7
13,4285714286