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son4ous [18]
3 years ago
7

What is the justification for the step taken from line 2 to line 3?

Mathematics
2 answers:
stiv31 [10]3 years ago
3 0

Step-by-step explanation:

3x+9-7x=x+10+x\\-4x+9=2x+10\\-6x+9=10\\

  • In the line 2, only variables were operated with a reduction of similar terms in each side of the equation, giving as result -4x at one side, and 2x at the other side.
  • In the line 3, terms with variables were joined together in one side of the equation, and then, they were operate it, given as result -6X.
brilliants [131]3 years ago
3 0

Answer:

the subtraction property of equality

Step-by-step explanation:

up up up uppity

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A=1 b=8 c=8
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h = [-8 +-sq root(32)] / 2
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3 years ago
Answer the questions from the picture <br> Step by step
andre [41]

Answer:

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irinina [24]
Theres only 4 but the answer is -15
3 0
3 years ago
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Agata [3.3K]

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2 years ago
Shelly is 3 years older than Michele. Four years ago the sum of their age was 67. Find the age of each person.
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3 years ago
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