Найдите значение выражения a + b − c:
а) при a = −3, b = −15, c = −27;
б) при a = −65, b = 15, c = −50.
при a = −3, b = −15, c = −27:
a + b − c = −3 + (−15) − (−27) = −3 − 15 + 27 = −18 + 27 = 9
при a = −65, b = 15, c = −50 :
a + b − c = −65 + 15 − (−50) = −65 + 15 + 50 = −65 + 65 = 0
