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Zigmanuir [339]
3 years ago
13

Z + 21/–1 = –3. z+21/-1 is a fraction

Mathematics
2 answers:
Stella [2.4K]3 years ago
6 0

Answer:

1 Move the negative sign to the left.

z-21=-3

2 Add 21 to both sides.

z=-3+21z=−3+21

3 Simplify -3+21 to 18

z=18

Step-by-step explanation:

hope it helps

Vika [28.1K]3 years ago
3 0

Answer:

No Answer

Step-by-step explanation:

z+\frac{21}{-1} =-3*z+\frac{21}{-1}

cancel out same on both sides

0=-3

N/A

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Answer:

speed acquired by me = 40 miles / hour

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Here's the solution :-

time taken by both = 6 hours

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3 0
3 years ago
15x-(-3x-10)=38x-5(4x-2)
son4ous [18]
15x+3x+10 = 38x-20x+10
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8 0
3 years ago
Please help with 6 and 7
Ilya [14]

Answer:

6. The number is -5

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Step-by-step explanation:

Question six can be re-worded to create the following expression:

-2=\frac{4x+10}{5}

Solve for x to find the number:

-2=\frac{4x+10}{5}\\-10=4x+10\\-20=4x\\\frac{-20}{4} = x\\-5 = x

Question seven can be solved by first listing the constraints (assuming x is smaller than y):

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To get the numbers, we can create a system of linear equations. First, solve for y in each expression:

y = x+1

2y = 3x-8\\y = \frac{3}{2}x - 4

Solve for x:

x+ 1 = \frac{3}{2}x - 4\\x + 5 = \frac{3}{2}x\\5 = \frac{3}{2}x - x\\5 = \frac{1}{2}x\\10 = x

Solve for y:

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4 0
2 years ago
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sesenic [268]

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(4x)² - 7²

= (4x + 7) (4x - 7) [3rd option]

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Hope it helps ⚜

4 0
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Answer:

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