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Marianna [84]
3 years ago
8

Solving equations 15(x)=4(2x+3)

Mathematics
2 answers:
julia-pushkina [17]3 years ago
8 0
7x=12 i am not positive how to completely solve it but... here you go!!
8_murik_8 [283]3 years ago
3 0
The answer is x = 12/7

because you multiply 15 by x to get 15x
15x = 4(2x+3)
next you simplify the right side by using the distributive property by doing 15x = 4(2x) + 4(3)
Then you multiply 2 by 4 to get 8
15x = 8x + 4(3)
and multiply 4 by 3 to get 12
15x = 8x + 12
Now you move terms containing (x) to the left side of the equation.
Since 8x contains the variable to solve for, move it to the left side of the equation by subtracting 8x from both sides.
15x - 8x = 12
subtract 8x from 15x to get 7x
7x = 12
Also , divide each term by 7 and simplify
Divide each term in 7x = 12 by 7
7x/7 = 12/7
Lastly ,  reduce the expression by cancelling  the common factors by
crossing out  all 7s 7x/7 and leave 12/7 as it is, and divide x by 1 to get x by
x = 12/7
So the answer is  x = 12/7 





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D

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3 years ago
Please help me I need this for tomorrow!!!
Mashcka [7]
Short answer:
25 inches is the perimeter of the larger rectangle



Long answer:
Imagine that you have a rectangle where every single side is 1 inch long. The total perimeter of the card is 4 inches, 1+1+1+1. The total perimeter is 4 inches.

Now imagine that you have a larger rectangle which is 1.25 times as wide and long as the smaller rectangle. In other words each side of the larger rectangle is 1.5 inches long. The perimeter of the larger card is 1.25+1.25+1.25+1.25. Because each 1 in the original equation was multiplied by 1.25. The perimeter of your larger rectangle is 5 inches.

Turn that into an equation. 5 inches equals 4 inches times 1.25. In other words, (larger rectangle perimeter) equals (smaller rectangle perimeter) times 1.25

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5 0
3 years ago
Add. −5/12+(−3/4) Enter your answer in the box as a fraction or mixed number in simplest form.
brilliants [131]
The answer is 1/2 cuz of simplyfing
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3 years ago
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