Can you please show all work how you do this and with answer 13x + 7 = 10x - 11

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15-09-2014
Mathematics

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Can you please show all work how you do this and with answer 13x + 7 = 10x - 11

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SlowZasob SlowZasob · Answer 1 · 2014-09-15T04:08:43+02:00

SlowZasob SlowZasob

15-09-2014

13x + 7 = 10x - 11 / + 11 (both sides)
13x + 18 = 10x / - 13x (both sides)
-3x = 18 / : (-3) (both sides)
x = -6

Generally try to isolate x from the rest of the numbers and calculations.

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AL2006 AL2006 · Answer 2 · 2014-09-15T04:09:16+02:00

AL2006 AL2006

15-09-2014

13x + 7 = 10x - 11

Subtract 10x from each side: 3x + 7 = -11

Subtract 7 from each side: 3x = -18

Divide each side by 3 : x = -6

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