Question

Escribe parentesis en cada expresion para obtener el numero dado
A. -5 x 2 + 3 -(-8 ) = - 17
B. 4 ÷ (- 2) + 3 x -6 = -20
C. 5-(- 3 ) + 8 + 2 = 2
D. 2 x - 3 + 5 - 2 x 3 - 4 - 5 + 2 + 1 = 19
MUCHAS GRACIAS

Answer 1

A. -5 x 2 + 3 -(-8 ) = - 17
-5 x ( 2+3) -(-8) = - 17
-5 x 5 + 8 = -17
-25 + 8 = -17
-17 = -17

B. 4 ÷ (- 2) + (3 x -6) = -20
-2 + ( - 18) = -20
-2 - 18= -20
-20= -20


C. 5-[(- 3 ) + 8] + 2 = 2
5-( -3 +8) +2= 2
5-( 5) +2 = 2
5-5 +2 = 2
2= 2

D . 2 x (- 3 + 5) - 2 x (3 - 4 - 5) + 2 + 1 = 19
2 x (2) - 2 x( 3-9) +3= 19
4 - 2 x ( -6) +3 = 19
4+ 12+ 3 = 19
19 = 19