LAHUERA36IN LAHUERA36IN Matemáticas contestada Resuelve las siguientes sumas de números con signo. ( +5 ) + (– 8) = ( +8 ) + (– 9) = ( +9 ) + (– 8) = ( +13 ) + (– 12) = ( +12 ) + (– 13) = ( +11 ) + (– 18) = ( +15 ) + (– 20) = ( +18 ) + (– 10) = ( +19 ) + (– 38) = (– 21 ) + (– 2) = (– 15 ) + (+ 3) = (– 19 ) + (+ 2) = (– 23 ) + (– 33) = (– 32 ) + (– 29) = (– 40 ) + (– 15) =