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2 years ago

The sum of two numbers is x. If one of the numbers is 12, what is the other? 12 - x x - 12 12 + x 12 x

Mathematics

2 answers:

igomit [66]2 years ago

7 0

Let

a-------> one of the numbers

b------> the other number

we know that

$a+b=x$ ----> equation A

$a=12$

substitute the value of a in the equation A

$12+b=x$

solve for b

Subtract $12$ from both sides

$12+b-12=x-12$

$b=x-12$

therefore

the answer is

The other number is $x-12$

kati45 [8]2 years ago

5 0

One of the number is 12.
The other number is y.
The sum of the numbers is x.

$12+y=x \\
y=x-12$

The other number is x-12.

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Lera25 [3.4K]

Answer:

First number =26

Second number =49

Step-by-step explanation:

Question:

The sum of two numbers is 75. The second number is 3 less than twice the first. Find the numbers.

Given:

Sum of two numbers = 75

The second number is 3 less than twice the first.

To find the numbers.

Solution:

Let the first number be = $x$

Let second number be = $y$

The sum equation can be given as:

$x+y=75$

It is given that the second number is 3 less than twice the first.

This can be given as:

$y=2x-3$

Substituting the value of $y$ in terms of $x$ in the sum equation.

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Combining like terms.

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Adding 3 both sides.

$3x-3+3=75+3$

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Dividing both ides by 3.

$\frac{3x}{3}=\frac{78}{3}$

$x=26$

Substitution $x=26$ in the second equation to find $y$ .

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