382. Упрости выражение: 1) 45a-8a+3a 2) 136x+815x+72x+18 3) 74x+39x+16x 4) 600y-320y-80y-4 5) 99x+76x-29x 6) 1530n-800n-80n+36

Решение: 1) (45a - 8a + 3a = (45 - 8 + 3)a = 40a) 2) (136x + 815x + 72x + 18 = (136 + 815 + 72)x + 18 = 1023x + 18) 3) (74x + 39x + 16x = (74 + 39 + 16)x = 129x) 4) (600y - 320y - 80y - 4 = (600 - 320 - 80)y - 4 = 200y - 4) 5) (99x + 76x - 29x = (99 + 76 - 29)x = 146x) 6) (1530n - 800n - 80n + 36 = (1530 - 800 - 80)n + 36 = 650n + 36)