Explanation

2x + 5 = 13

Step 1: Subtract 5 from both sides  

2x = 13 - 5  

2x = 8

Step 2: Divide both sides by 2  

x = 8 / 2  

x = 4

Explanation

=xy=73=xy+y2x2−y2=(xy)+1(x2y2)−1=73+1(73)2−1=103×940=3/4

Explanation

SH8-8-2023

Explanation

Sh8-8-2023

Explanation

Sh7-8-2023

Explanation

In mathematics, an algebraic expression is an expression built up from constant algebraic numbers, variables, and the algebraic operations.

For example, 3x² − 2xy + c is an algebraic expression.

Explanation

3x+3y=7

3(x+y)=7

x+y=7/3

x+y=3.4(approx)

x=3.4-y......1)

8x+7y=12

8(3.4-y)+7y=12

27.2-8y+7y=12

-y=12-27.2

-y= -15.2

y=15.2

1)x=3.4-y

x=3.4-15.2

x= - 11.8

To find the average of x and y, we first need to find the values of x and y that satisfy the given equations. Let's solve the system of equations: 1. Multiply the first equation by 7 and the second equation by 3 to eliminate the y term: - 21x - 21y = 49 - 24x + 21y = 36 2. Add the two equations together: - 21x - 21y + 24x + 21y = 49 + 36 - 3x = 85 - x = 85/3 3. Substitute the value of x back into either of the original equations. Let's use the first equation: 3(85/3) + 3y = 7 85 + 3y = 7 3y = -78 y = -78/3 y = -26 So the solution to the system of equations is x = 85/3 and y = -26. To find the average of x and y, we add them together and divide by 2: Average = (x + y) / 2 = (85/3 - 26) / 2 = (85/3 - 78/3) / 2 = 7/3 / 2 = 7/6 Therefore, the average of x and y is 7/6 or 1.16

ND5-07-2023

Explanation

step 2:

Answer:

20 + 2 = 22

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ND04-12-2022

Explanation

2x + 2x = 12

        4x = 12

          x =  12/4

          x =  3

Now put x= 3 in 2x - 1

2(3) - 1 = 5

Therefore 2x -1 = 5

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ND04-12-2022

ND23-6-2023

Explanation

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