Addition and subtraction - Examples, Exercises and Solutions

According to the rules of the order of operations, given that the exercise only involves subtraction and addition operations, we solve the exercise from left to right:

$3+2=5$

$5-1=4$

According to the rules of the order of arithmetic operations, we will work to solve the exercise from left to right:

9+3=11

11-1=10

And this is the solution!

To solve the expression $12 + 7 - 5$, follow these steps:

1. Add the first two numbers: $12 + 7 = 19$.
2. Subtract the third number: $19 - 5 = 14$.

To solve $15+8-6$ follow these steps:

1. $15 + 8 = 23$ .

2. $23 - 6 = 17$ .

So the answer is $17$.

To solve $10+5-3$ follow these steps:

1. $10 + 5 = 15$

2. $15 - 3 = 12$

So the answer is $12$.

To solve $8+6-4$ follow these steps:

1. $8 + 6 = 14$

2. $14 - 4 = 10$

So the answer is $10$.

First, add 7 and 5 to get 12.

$7 + 5 = 12$

Then, subtract 2 from 12 to get 10.

$12 - 2 = 10$

First, subtract 4 from 15 to get 11.

$15 - 4 = 11$

Then, add 3 to 11 to get 14.

$11 + 3 = 14$

First, subtract 6 from 8 to get 2.

$8 - 6 = 2$

Then, add 4 to 2 to get 6.

$2 + 4 = 6$

First, add 5 and 9 to get 14.

$5 + 9 = 14$

Then, subtract 3 from 14 to get 11.

$14 - 3 = 11$

First, we perform the addition: $7 + 2 = 9$.

Next, we do the subtraction: $9 - 4 = 5$.

Hence, the answer is $5$.

Add first: $6 + 5 = 11$.

Then, subtract: $11 - 8 = 3$.

The correct answer is $3$.

Start by adding: $10 + 1 = 11$.

Finally, subtract: $11 - 7 = 4$.

The solution is $4$.

To solve $9 + 3 - 5$:

1. Start with the addition: $9 + 3 = 12$
2. Then perform the subtraction: $12 - 5 = 7$
3. Therefore, the final answer is $7$.

To solve $7 - 2 + 6$:

1. Begin with the subtraction: $7 - 2 = 5$
2. Then add the result to 6: $5 + 6 = 11$
3. Thus, the correct answer is $11$.