Can you check my answer for simplifying -2[3(x - 2y) +7] + [3(2 - 5x) + 10] - 7[-2(x - 3) + 5]?

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Can you check my answer for simplifying -2[3(x - 2y) +7] + [3(2 - 5x) + 10] - 7[-2(x - 3) + 5]?

I came up with $- 7 x + 12 y + 10$ $-7x+12y+10$

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Answer 1 · 2017-09-05T10:17:00

$- 7 x + 12 y - 75$ $-7x+12y-75$

Explanation:

$expanding term by term$ $"expanding term by term"$

$∙ x - 2 [3 (x - 2 y) + 7]$ $•color(white)(x)-2[3(x-2y)+7]$

$= - 2 [3 x - 6 y + 7]$ $=-2[3x-6y+7]$

$= - 6 x + 12 y - 14 \to (1)$ $=-6x+12y-14to(color(red)(1))$

$∙ x [3 (2 - 5 x) + 10]$ $•color(white)(x)[3(2-5x)+10]$

$= 6 - 15 x + 10 = 16 - 15 x \to (2)$ $=6-15x+10=16-15xto(color(red)(2))$

$∙ x - 7 [- 2 (x - 3) + 5]$ $•color(white)(x)-7[-2(x-3)+5]$

$= - 7 [- 2 x + 6 + 5]$ $=-7[-2x+6+5]$

$= - 7 [11 - 2 x] = - 77 + 14 x \to (3)$ $=-7[11-2x]=-77+14xto(color(red)(3))$

$adding all 3 expressions together$ $"adding all 3 expressions together"$

$- 6 x + 12 y - 14 + 16 - 15 x - 77 + 14 x$ $-6x+12y-14+16-15x-77+14x$

$= - 7 x + 12 y - 75$ $=-7x+12y-75$

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Can you check my answer for simplifying -2[3(x - 2y) +7] + [3(2 - 5x) + 10] - 7[-2(x - 3) + 5]?

I came up with $- 7 x + 12 y + 10$ $-7x+12y+10$

1 Answer

Explanation:

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Impact of this question

Science

Math

Humanities

... and beyond

Can you check my answer for simplifying -2[3(x - 2y) +7] + [3(2 - 5x) + 10] - 7[-2(x - 3) + 5]?

I came up with −7x+12y+10-7x+12y+10

1 Answer

Explanation:

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Impact of this question

I came up with $- 7 x + 12 y + 10$ $-7x+12y+10$