1) 3,3a + a - 4 = 4,3a - 42) 5a - (0,7a + 8) = 5a - 0,7a - 8 = 4,3a - 83) 5,3d - (2d + 3) = 5,3d - 2d - 3 = 3,3d - 34) 9,6d + (7 - 0,4d) = 9,6d + 7 - 0,4d = 9,2d + 75) 2c - (9 - 5,1c) = 2c - 9 + 5,1c = 7,1c - 96) -5c + (13 - 6c) = -5c + 13 - 6c = -11c + 137) 3(x - 7) + 5x = 3x - 21 + 5x = 8x - 218) 5(4 - 3x) + 8x = 20 - 15x + 8x = -7x + 209) 2(y - 4) + 10y = 2y - 8 + 10y = 12y - 810) (2y + 5) * 4 - y = 8y + 20 - y = 7y + 2011) 4x + 2(0,5x + 3) = 4x + x + 6 = 5x + 612) 6x - 3(x - 7) = 6x - 3x + 21 = 3x + 21
1) 3,3a + a - 4 = 4,3a - 4
2) 5a - (0,7a + 8) = 5a - 0,7a - 8 = 4,3a - 8
3) 5,3d - (2d + 3) = 5,3d - 2d - 3 = 3,3d - 3
4) 9,6d + (7 - 0,4d) = 9,6d + 7 - 0,4d = 9,2d + 7
5) 2c - (9 - 5,1c) = 2c - 9 + 5,1c = 7,1c - 9
6) -5c + (13 - 6c) = -5c + 13 - 6c = -11c + 13
7) 3(x - 7) + 5x = 3x - 21 + 5x = 8x - 21
8) 5(4 - 3x) + 8x = 20 - 15x + 8x = -7x + 20
9) 2(y - 4) + 10y = 2y - 8 + 10y = 12y - 8
10) (2y + 5) * 4 - y = 8y + 20 - y = 7y + 20
11) 4x + 2(0,5x + 3) = 4x + x + 6 = 5x + 6
12) 6x - 3(x - 7) = 6x - 3x + 21 = 3x + 21