Question

Fie numerele a b și c daca a = cu 9 ×7 - 2 ×4- 5 ×10 b= 98 -( 7× 7 + 3 ×7 +5 × 3)și c=( 13 +7× 4) - 39

Answer 1

a = 9 × 7 - 2 × 4 - 5 × 10

a = 63 - 8 - 50

a = 55 - 50

a = 5

______

b = 98 - ( 7 × 7 + 3 × 7 + 5 × 3 )

b = 98 - ( 49 + 21 + 15 )

b = 98 - ( 70 + 15 )

b = 98 - 85

b = 13

_______

c = ( 13 + 7 × 4 ) - 39

c = ( 13 + 28 ) - 39

c = 41 - 39

c = 2

Answer 2

a= 9 × 7 - 2 × 4 - 5 × 10
a = 63 - 8 - 50
a = 5


b = 98 - ( 7 × 7 + 3 × 7 + 5 × 3 )
b = 98 - ( 49 + 21 + 15 )
b = 98 - 85
b = 13


c = ( 13 + 7 × 4 ) - 39
c = ( 13 + 28 ) - 39
c = 41 - 39
c = 2