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Art [367]
4 years ago
10

I need help in this, the result should give 17 someone please help me

Mathematics
2 answers:
shtirl [24]4 years ago
7 0

Answer:

X= 20

Step-by-step explanation:

x/5 + 13 = 17

x/5 + 13 =17

- 13. -13

x/5×5 4×5=20

So X=20

tatuchka [14]4 years ago
4 0
The correct answer is x=20
Here step by step:
X/5=4
5 X x/5=5 X 4
X=20
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(1) \frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}

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Step-by-step explanation :

(1) The given expression is: \frac{1}{x}+\frac{1}{y}

\frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}

(2) The given expression is: \frac{1}{5x}+\frac{1}{3y}

\frac{1}{5x}+\frac{1}{3y}=\frac{3y+5x}{(5x)\times (3y)}=\frac{3y+5x}{15xy}

(3) The given expression is: \frac{1}{7x}-\frac{1}{2y}

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(4) The given expression is: \frac{2}{5x}+\frac{3}{7y}

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\frac{7}{11x}-\frac{1}{33y}=\frac{(7\times 33y)-(1\times 11x)}{(11x)\times (33y)}=\frac{231y-11x}{363xy}

(6) The given expression is: \frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}

\frac{1}{2x}+\frac{3}{x}-\frac{1}{7y}=\frac{(x\times 7y)+(3\times 2x\times 7y)-(2x\times x)}{(2x)\times (x)\times (7y)}=\frac{7xy+42xy-2x^2}{14x^2y}=\frac{7y+42y-2x}{14xy}

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