One number is seven more than the other. Their sum is fifteen. Find the numbers.

2 answers:

Tpy6a [65]3 years ago

8 0

Answer:

_+7=15

15-7=8

8+7=15

Step-by-step explanation:

aniked [119]3 years ago

7 0

Answer:

The numbers are 4 and 11.

Step-by-step explanation:

If one number is 7 more than the other, you can express that as x+7 is equal to the other number which we can call "y".

If you add "y" which is basically x+7 to x, which is one of the numbers, your equation will be x+x+7=15.

Simplify: 2x+7=15.

Subtract 7 from both sides of the equation and you have 2x=8.

Divide by 2 on both sides and x is equal to 4.

You plug 4 back into the expression "x+7".

4 plus 7 is 11.

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Nadya [2.5K]

The total number of children can be calculated using linear equation in one variable. The marbles are shared among 7children.

<u>Solution</u>

Total number of marbles = 47

The number of marbles received by each child = 6

Let the number of children be x

Then according to the question'

Total number of marbles received by all children + 5 = Total number of marbles

6x + 5 = 47

6x = 47- 5

6x = 42

x = 7

now, the number of children is 7.

<h3>What is linear equation in one variable?</h3>

An equation is said to be linear if the maximum power of the variable is consistently 1. Another name for it is a one-degree equation.
A linear equation with one variable has the conventional form Ax + B = 0. In this case, the variables x and A are variables, while B is a constant. A linear equation with two variables has the conventional form Ax + By = C.
Here, the variables x and y, the coefficients A and B, and the constant C are all present.
A linear equation's graph will always be a straight line.
One-variable linear equations are fairly simple to solve. To determine the value of the unknown variable, the variables are divided and placed on one side of the equation, and the constants are combined and placed on the other side.