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3 years ago

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

Mathematics

2 answers:

omeli [17]3 years ago

3 0

Answer:

Step-by-step explanation:

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

MrMuchimi3 years ago

3 0

Answer:

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

Step-by-step explanation:

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