1) -3x + 10x = -15 - 67x = -15 - 67x = -21x = -21 / 7x = -3
2) 7x - 5x = 17 - 352x = -18x = -18 / 2x = -9
3) 5x - 7x = -35 + 37-2x = 2x = 2 / -2x = -1
4) -2x - 11x = -45 + 37-13x = -8x = -8 / -13x ≈ 0.615
5) 2a - 2(a - 7)2a - 2a + 1414
6) -6a + 3(2 - 2a)-6a + 6 - 6a6 - 12a
1) -3x + 10x = -15 - 6
7x = -15 - 6
7x = -21
x = -21 / 7
x = -3
2) 7x - 5x = 17 - 35
2x = -18
x = -18 / 2
x = -9
3) 5x - 7x = -35 + 37
-2x = 2
x = 2 / -2
x = -1
4) -2x - 11x = -45 + 37
-13x = -8
x = -8 / -13
x ≈ 0.615
5) 2a - 2(a - 7)
2a - 2a + 14
14
6) -6a + 3(2 - 2a)
-6a + 6 - 6a
6 - 12a