Объяснение:
2) 7р – 2(3р - 1) = 7р – 6p + 2 = p + 2;
3) 2(3x – 8) – 5(2x + 7) = 6x - 16 - 10x - 35 = -4x - 51;
4) 3(5m - 7) - (15m - 2) = 15m - 21 - 15m + 2 = -19
Объяснение:
2) 7р – 2(3р - 1) = 7р – 6p + 2 = p + 2;
3) 2(3x – 8) – 5(2x + 7) = 6x - 16 - 10x - 35 = -4x - 51;
4) 3(5m - 7) - (15m - 2) = 15m - 21 - 15m + 2 = -19
3) 2(3x-8)-5(2x+7)=6x-16-10x-35=-4x-51
4) 3(5m-7)-(15m-2)= 15m-21–15m+2=-19