Question

(4)+(-7)+(-2)+(-5)+(3)=​

Answer 1

Aplicamos la regla de

+ (- a )   = - a

Debemos seguir las PEMDAS sumar de  izquierda a derecha

$( 4 ) - 7 + (-2 ) + (-5 ) + ( 3) \\\\(4) - 7 = -3 \\ \\( 4 ) - 7 + (-2 ) + (-5 ) + ( 3) \\\\ -3 - 2 + (5) + ( 3 )\\\\3- 2 = 5\\\\-5 + (5 ) + (3)\\\\-5 -5 + ( 3 )\\\\-10 + ( 3 )\\\\= -7$

Grado : Secundaria