Ответ: 688, 689
Пошаговое объяснение:
688
1) 3,3а + (а - 4)= 4,3а - 4
2) 5а - (0,7а + 8) = 4,3а - 8
3) 5,3b - (2b+3) = 3,3 b - 3
4) 9,6b + (7 - 0,4b)= 9.2 b + 7
5) 2c - (9 - 5,1c) = -9 - 3,1c
6) -5c + (13 - 6c) = -11c + 13
689
1) 3*(x-7) + 5x = 3x - 21 + 5x= 8x - 21
2) 5*(4 - 3x) + 8x = 20-15x + 8x = 20 - 7x
3) (y - 4) * 2 + 10y = 2y - 8 + 10y = 12y - 8
4) (2y + 5 ) *4 - 11y= 8y + 20 -11y = 20 - 3y
5) 4x + 2(0.5x + 3)= 4x + x +6= 5x + 6
6) 6x - 3*(x - 7)= 6x -3x + 21= 3x+21x