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liq [111]
3 years ago
10

3x-4x+21=15 what is the answer to this question ? and how do I get my answer?

Mathematics
2 answers:
attashe74 [19]3 years ago
7 0
3x-4x+21=15
\/
-1x+21=15
-21 -21
_______
-1x=-6
__. __
-1. -1
x=6
ZanzabumX [31]3 years ago
4 0
3x - 4x + 21= 15; -1x + 21 - 21= 15 - 21; -1x  ÷ -1 = -6 ÷ -1; x = 6.
The answer is x = 6.
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How can I solve this equation 6+7x=55
lorasvet [3.4K]

You could solve it with these two steps:

             #1).  Subtract 6 from each side of the equation.
and then
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If you'll do that, the solution will be right there on the paper in front of you.
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7 0
3 years ago
Read 2 more answers
Plssss i need help rn ​
wariber [46]

Answer:

3

Step-by-step explanation:

(x₁ , y₁) = (-1 , -2)   &    (x₂ , y₂) = (3 , 10)

Slope =\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

         = \frac{10-[-2]}{3-[-1]}\\\\=\frac{10+2}{3+1}\\\\=\frac{12}{4}\\\\=4

m  = 4

y - y₁ = m (x - x₁)

y - [-2] = 4(x - [-1])

y + 2 = 4(x + 1)

y + 2 = 4x + 4

    y = 4x + 4 - 2

    y = 4x + 2

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3 years ago
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Svetach [21]

B

Step-by-step explanation:

6 0
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Step-by-step explanation:

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