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aksik [14]
2 years ago
7

How do I solve for x? -3x+7=1

Mathematics
2 answers:
Andre45 [30]2 years ago
8 0

Answer:

x=8/-3 or 2.6

Step-by-step explanation:

You have to isolate the "x" so move the +7 to the other side of the equation and you get this:

-3x=1+7

Now you can simplify and add 7 plus 1 which is 8

the equation should looks like this now:

-3x=8

Then to have x by itself you divide -3 on both sides.

-3 divided by -3x just leaves the x there and -3 divided by 8 is just 8/-3 or in decimal form it's 2.6

-3x/-3= x

8/-3= 8/-3 or 2.6

x= 8/-3

I'm not really good at explaining but I hope it helped :/

inna [77]2 years ago
4 0

Answer:

x=2

Step-by-step explanation:

              -3x+7=1

subtract 7 from both sides: -3x+7-7=1-7

simplify: -3x=-6

divide both sides by -3:  \frac{-3x}{-3}=\frac{-6}{-3}

simplify: x=2

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What is the solution to this equation 2/3x+1=1/6×-7
Alika [10]

Answer:

A . x= -16

Step-by-step explanation:

\\\frac{2}{3}x+1=\frac{1}{6}x-7\\\\\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}\\\\\frac{2}{3}x+1-1=\frac{1}{6}x-7-1\\\\\frac{2}{3}x=\frac{1}{6}x-8\\\\\mathrm{Subtract\:}\frac{1}{6}x\mathrm{\:from\:both\:sides}\\\\\frac{2}{3}x-\frac{1}{6}x=\frac{1}{6}x-8-\frac{1}{6}x\\\\= \frac{1}{2}x=-8\\\\\mathrm{Multiply\:both\:sides\:by\:2}\\\\2\times \frac{1}{2}x=2\left(-8\right)\\\\x=-16

7 0
3 years ago
HURRY ILL PICK BRAINLIEST!!!!!!!
telo118 [61]
<span>30x + 30y = 450 20x + 25y = 345

Here 345 represents the total area (in sq ft) shoveled; x repres. Melinda's rate and y represents Paul's rate.  We need to solve for x and y and then subtract the smaller from the larger.

</span>30x + 30y = 450   Multiply this eqn by 2:      6<span>0x + 60y = 900
</span>20x + 25y = 345   Mult this eqn by -3:          -60x -75y  = -1035
                                                                    ---------------------------
                                                                              -15y  = -135
                                                                                    y = 9

This comes to 9 square feet per minute.
Now, let's find x:    30x + 30y = 450; 30x + 270 = 450; 30x = 180; x = 6

Melinda can shovel 6 sq ft in 1 min, whereas Paul can shovel 9.

The difference is (9 - 6) sq ft / min,     or     3 sq ft / min   (answer)
4 0
3 years ago
Read 2 more answers
Write an equation of the line passing through the given point and satisfying the given condition. Give the equation (a) in slope
Mariana [72]

Answer:

(a) y=8x-46

(b) 8x-y=46

Step-by-step explanation:

-y=-8x+4

y=8x+4

We know that 8 is the slope, and if we need a equation parallel to this line, then it will have the same slope.

Substitute (6,2)

2=8(6)+b

2=48+b

b=-46

The final answer is y=8x-46

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Answer:

\frac{2}{5}(3 + y)

Step-by-step explanation:

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