45. 4(2a + 2) - 17
Multiply the bracket by 4
(4)(2a)(4)(2)-17
8a+8-17
8a-9 or -9+8a
48. -6 - 3(2k + 4)
(-3)(2k)(-3)(4)
-6-6k-12
-6-12-6k
-18-6k or -6k-18
40. 2(a- 4) + 15
(2)(a)(2)(-4)+15
2a-8+15
2a+7 or 7+2a
41. 13 + 2 (5c - 2 )
(2)(5c)(2)(-2)
13+10c-4
13-4+10c
9+10c or 10c+9
42. 7 + 2( 1/5a - 3)
(2)(1/5a)(2)(-3)
7+2/5a-6
7-6+2/5a
1+2/5a or 2/5a+1
46. -4x + 3(2x - 5)
(3)(2x)(3)(-5)
-4x+6x-15
2x-15 or -15-2x
Answers:
45. 8a-9 or -9+8a
48. -18-6k or -6k-18
40. 2a+7 or 7+2a
41. 9+10c or 10c+9
42. 1+2/5a or 2/5a+1
46. 2x-15 or -15-2x