Question

Calculeaza: 2a+3b-2c-82xd, daca:
a=(7+7:7-7:7)x7
b=2+13:13-12:12+9:9x9/ ab:ab+10xab:ab
c=(276-3x92):3
d=(axb+axc):(b+c):a

Answer 1

A) =(7+7:7-7:7)×7
=(7+1-1)×7
=49

B) =2+13:13-12:12+9:9×9
=2+1-1+1×9
=11

C) =(276-3×92):3
(276-276):3
=0:3
=0

D) =(a×b+a×c:(b+c):a
=(49÷11+49×0):(11+0):49
=539:11:49
=1
2a+3-2c-82×d
2×49+3×11-2×0-82×1
=98+33-0-82
=131-82
=49

Sper ca te-am ajutat!