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HELP!!!! What is-15=(3x-10)-5x

HELP!!!! What is-15=(3x-10)-5x
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4 votes
HELP!!!! What is-15=(3x-10)-5x

asked
User Oritm
by
7.5k points

2 Answers

4 votes

Answer:

exact form x=5/2 decimal form2.5 mixed number form 2 1/2

Explanation:

answered
User Louis Kurniawan
by
8.7k points
6 votes

Answer:

x = 2.5

Explanation:


-15=(3x-10)-5x\\\\-15=3x-10-5x\qquad\text{combine like terms}\\\\-15=(3x-5x)-10\\\\-15=-2x-10\qquad\text{add 10 to both sides}\\\\-15+10=-2x-10+10\\\\-5=-2x\qquad\text{divide both sides by (-2)}\\\\(-5)/(-5)=(-2x)/(-2)\\\\2.5=x\to x=2.5

answered
User Thibault Clement
by
7.7k points
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