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Andreas93 [3]
3 years ago
12

X: -3x + 14 = 4x -7

Mathematics
2 answers:
vaieri [72.5K]3 years ago
8 0

Answer:

x = 3

Step-by-step explanation:

You are solving for x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. PEMDAS is the order of operation, and equals:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

First, subtract 14 and 4x from both sides:

-3x (-4x) + 14 (-14) = 4x (-4x) - 7 (-14)

-3x - 4x = -7 - 14

-7x = -21

Next, divide -7 from both sides of the equation:

(-7x)/-7 = (-21)/-7

x = -21/-7

x = 3

x = 3 is your answer.

~

Luda [366]3 years ago
7 0
-3x+14=4x-7 = x=3

The answer is x=3
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Answer: Try to figure it out first. If you can't, then you haven't learned the material and you won't be able to understand subsequent lessons.


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Question 1 checks that you know several things:


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● Which number is the y intercept in equation y = m x + b.

m is NOT the y intercept.

b IS the y intercept.

Guess which is the slope...


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● The meaning of an inequality and how it is graphed:

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A dotted line means the line is not included (< or >).

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Say (A,B) = (5,6), and the statement is y < 2x + 3. You substitute A (5) for x and evaluate the right hand side to a number (13), and substitute B (6) for y on the left hand side to give a statement about two numbers: 6 < 13. If the statement is true, then (A,B) is in the solution set.


Then the region containing (A,B) will be shaded (inequality), or a solid line (equation).


Question 2 tries to see if you realize you can't draw a line between two points without first plotting both points.


Question 3 checks to see if you know how to tell if an equation matches a line on graph paper. You can look at the line, find the y intercept (b) and the slope (m), and look for an equation y = m x + b.

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You can figure the slope of the red line as m = rise/run. The answer is m=2, so the equation is y = 2x+4.

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