Question

16. Calculati A+B-C, stiind că:
A =(7x8-20): 6+100: 4-20:
B-4+4:4-4;
C'=(9+9x9):9.​

Answer 1

A=(56-20):6+25-20

A =36:6+5

A =6+5=11

B=4+1-4

B=5-4

B=1

C=(9+81):9

C=90:9

C=10

A+B-C=11+1-10=12-10=2