Question

Aflaţi termenul necunoscut din egalitatea:
{2-[14+ (5 + x): 6] -5}: 9 + 7 = 10.​

Answer 1

2-[14+(5+x):6]:9=10-7

2-[14+(5+x):6]:9=3

2-[14+(5+x):6]=3:9

2-[14+(5+x):6]=3

14+(5+x):6=3-2

14+(5+x):6=1

14+(5+x)=1×6

14+(5+x)=6

5+x=14-6

5+x=8

x=8-5

x=3