Упростите выражение:а) 5a – 3b – 8a + 12b;б) 16с + (3с – 2) – (5с + 7);в) 7 – 3(6у – 4).. Created by annadmitriieva. algebra-ru

Упростите выражение:а) 5a – 3b – 8a + 12b;б) 16с + (3с – 2) – (5с + 7);в) 7

August 2022 2 2 Report

Упростите
выражение:

а)
5a – 3b – 8a + 12b;

б)
16с + (3с – 2) – (5с + 7);

в)
7 – 3(6у – 4).

AlbuRin

Verified answer

A) 5a - 3b - 8a + 12b = 5a - 8a + 12b - 3b = -3a + 9b
б) 16c + (3c - 2) - (5c + 7) = 16c + 3c - 2 - 5c - 7 = =
= 19c - 5c - 2 - 7 = 14c - 9
в) 7 - 3(6y - 4) = 7 - 3*6y + 3*4 = 7 + 12 - 18y = 19 - 18y

58 votes Thanks 160

4MD А) 5a – 3b – 8a + 12b = (5 – 8)a + (12 – 3)b = 9b – 3a или 3(3b – a)
б) 16с + (3с – 2) – (5с + 7) = 16с + 3с – 2 – 5с – 7 = (16 + 3 – 5)с – 2 – 7 = 14с – 9
в) $7-3(6y-4)=7-3\cdot6y+3\cdot4 = 7-18y+12=19-18y$

22 votes Thanks 46

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