Question

Rezolvati ecuatiile in multimea numerelor naturale 9-2x=x+3;3(x+2)-1=x+7;4(2x+1)-(11-2.3)x=6

Answer 1

9-2x=x+3
9-3=x+2x
6=3x
x=6:3
x=2

3(x+2)-1=x+7
3x+6-1=x+7
3x-x+6=7+1
2x+6=8
2x=8-6
2x=2
x=2:2
x=1

4(2x+1)-(11-2.3)x=6
8x+4-(11-6)x=6
8x+4-5x=6
3x=6-4
3x=2
cred ca este o greseala , nu am inteles operatiile din a doua paranteza (este 2*3 sau 2,3)