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Travka [436]
3 years ago
12

Three times the sum of a number and eight is four more than the number. find the number

Mathematics
1 answer:
docker41 [41]3 years ago
7 0

Answer:

3(x+8)=4+x

distribute the 3 by multiplying it with the x and the 8

3x+24=4+x

subtract x from both sides

2x+24=4

subtract 24 from both sides

2x=4-24

2x=-20

divide each side by 2

leaving the variable isolated

x=-10

Step-by-step explanation:

It is important to balance each side by doing the same to both sides such as at the end divide both sides by 2.

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-8d-5d+7d=72 can you help me figure out d
Kryger [21]

Answer:

d = -12

Step-by-step explanation:

Add -8 -5 +7

take that number : -6

72 divided by -6 = -12

d = -12

8 0
2 years ago
Find an equation of the line through (3,6) and parallel to y = 4x - 7.
FromTheMoon [43]

Answer:

y=4x-6

Step-by-step explanation:

Okay, to do this we must understand what parallel means.

parallel means that that one line will NEVER touch the other. In order for this to happen they must be increasing (or decreasing) by the SAME rate. I.e the slope of your line must be the same as the lin in question thus our equation looks like,

y=4x+c.

Now lets find c.

To do this, plug the point (3,6) into the equation

6=4(3)+C

6=12+C

-6=C

Thus now that we know C, our equaiton is

y=4x-6

4 0
3 years ago
Read 2 more answers
How could you rewrite (-3 + 5) + 8 + (-1)
vagabundo [1.1K]

(-3 + 5) + 8 + (-1)=

2 + 8 - 1 =

= 9

7 0
3 years ago
I'll give brainliest!!!!!!
ludmilkaskok [199]
-2,2 is the answer hoped it helped :)
7 0
4 years ago
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Yuri [45]

Answer:

Step-by-step explanation:

y=-1

7 0
2 years ago
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