Question

ex:

45-n:7=90-51
100-m:9=45=46 dau coroana de 99puncte

Answer 1

$1)45-n:7=90-51 \\\\ 45-n:7=39 \\\\ -n:7=39-45 \\\\ -n:7=-6 \\\\ n:7=6 \\\\ n=6*7 \\\\ \boxed{n=42} \\\\\\\\\ 2)100-m:9-45=46 \\\\ 55-m:9=46 \\\\ 55-46=m:9 \\\\ 9=m:9 \\\\m=9*9 \\\\ \boxed{m=81}$

Answer 2

45-n:7=90-51
45-n:7=39
n:7=45-39
n:7=6
n=6*7
n=42

100-m:9=45-46
55-m:9=46
55-46=m:9
9=m:9
m=9*9
m=81

Sper ca te-am ajutat!