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3 years ago

Which ordered pair is a solution of the equation? - 4x + 7 = 2y - 3

Mathematics

2 answers:

Nikolay [14]3 years ago

8 0

Answer:

(2,1) and (5,-5)

Step-by-step explanation:

I just did this question

nydimaria [60]3 years ago

6 0

Answer:

(0,5), (1,3), (2,1)

Step-by-step explanation:

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3 years ago

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lozanna [386]

Option A: $\frac{10}{9}$ is the solution of x

Explanation:

The given expression is $\frac{7}{(x+2)}+\frac{11}{(x-5)}=\frac{7}{(x+2)(x-5)}$

We need to determine the value of x.

The value of x can be determined by solving the expression for x.

Taking LCM , we get,

$\frac{7(x-5)+11(x+2)}{(x+2)(x-5)}=\frac{7}{(x+2)(x-5)}$

Since, the denominator is common for both sides of the equation, let us cancel the denominator.

Thus, we have,

$7(x-5)+11(x+2)=7$

Multiplying the terms within the bracket, we get,

$7x-35+11x+22=7$

Adding the like terms, we get,

$18x-13=7$

Adding both sides of the equation by 13, we have,

$18x=20$

Dividing both sides of the equation by 18,

$x=\frac{20}{18}$

Simplifying, we get,

$x=\frac{10}{9}$

Thus, the solution is $\frac{10}{9}$

Therefore, Option A is the correct answer.

4 0

3 years ago

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