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45. 4(2a + 2) - 17
48. -6 - 3(2k + 4)
40. 2(a- 4) + 15
41. 13 + 2 (5c - 2 )
42. 7 + 2( 1/5a - 3)
46. -4x + 3(2x - 5)
Does anyone know how to simply these^ expressions? Please help!!!

Respuesta :

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

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