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leva [86]
3 years ago
5

What is -2x-7=3(4x+7)

Mathematics
2 answers:
Ludmilka [50]3 years ago
4 0

Answer:

x= -2

Step-by-step explanation:

-2x-7=3(4x+7)

multiply numbers in parenthesis by 3

-2x-7=12x+21

move terms

-2x-12x=21+7

subtract -2x to -12x but since there negative the equation is addition. Also, add 21 to 7

-14x=28

divide both sides by -14

x= -2

3241004551 [841]3 years ago
3 0

Answer:

x= -2

Step-by-step explanation:

sorry dont read this

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What is an equation of the line that passes through the point (-7,-6)(−7,−6) and is parallel to the line x-y=7x−y=7?
kotykmax [81]

Answer:

y = x + 1

Step-by-step explanation:

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For (-7,-6) we use x2 and y2 (because this point can be anywhere along a line):

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At this stage, the equation can't be solved as there are two unknowns. Therefore, the gradient must be found another way. Two lines are parallel if they have the same gradient - in their y=mx+c equations, m will be equal.

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Therefore, the gradient of the other parallel line must also be 1.

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Answer:

Step-by-step explanation:

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A 6-pack cost $1.50 is the better deal.

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3 years ago
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