What is the nbsp-solution of nbsp-the equation 3x - 7y - 30 if nbsp- nbsp-x - y- nbsp-1-1-2-2-3-3-4-4-

The correct option is C (3,3) Substiuting x = y in the equation 3x+7y=30, we get 3x + 7x = 30. ⇒ 10x = 30 ⇒ x = 3 nbsp; Thus, x=y=3. In other words, (3,3) is ...

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Standard VIII

Mathematics

Solution of linear equation in 2 variables

What is the ...

Question

What is the solution of the equation $3 x + 7 y = 30$ if $x = y$ ?

$(1, 1)$

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$(2, 2)$

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$(3, 3)$

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$(4, 4)$

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Solution

The correct option is C
$(3, 3)$

Substiuting $x = y$ in the equation $3 x + 7 y = 30,$ we get
$3 x + 7 x = 30.$
$\Rightarrow$ $10 x = 30$
$\Rightarrow$ $x = 3$
Thus, $x = y = 3.$
In other words, $(3, 3)$ is a solution of the equation $3 x + 7 y = 30.$

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Similar questions

What is the solution of the equation $3 x + 7 y = 30$ if $x = y$ ?

Q. The solution of the equation

3 x + 7 y = 30

x = y

is.

Q. If

(- 7, y)

is a solution to the equation

2 x - 7 y = 0

, what is the value of

y

y = (\frac{1}{2}) x + 7

y = 3 x

Consider the system of equation above. If (x, y) is a solution to the system of equation. Then what is the value of y + x?

Q. The solution of linear equations

3 x - 7 y + 10 = 0

and

y - 2 x - 3 = 0

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What is the solution of the equation 3x+7y=30 if x=y?

The correct option is C (3,3) Substiuting x=y in the equation 3x+7y=30, we get 3x+7x=30. ⇒ 10x=30 ⇒ x=3 Thus, x=y=3. In other words, (3,3) is a solution of the equation 3x+7y=30.

What is the solution of the equation $3 x + 7 y = 30$ if $x = y$ ?

The correct option is C
$(3, 3)$

Substiuting $x = y$ in the equation $3 x + 7 y = 30,$ we get
$3 x + 7 x = 30.$
$\Rightarrow$ $10 x = 30$
$\Rightarrow$ $x = 3$
Thus, $x = y = 3.$
In other words, $(3, 3)$ is a solution of the equation $3 x + 7 y = 30.$