Addition and subtraction: Large Numbers

To solve the expression $20-3-7+4$, we follow the order of operations. Since there are only addition and subtraction operations, we can solve from left to right:

$20-3$ gives us $17$.

Then, $17-7$ gives us $10$.

Finally, $10+4$ gives us $14$.

So, the correct answer is $14$.

To solve $20-8-3+7$, follow these steps:

1. Start with the first operation: $20-8 = 12$.
2. Next, subtract 3: $12-3 = 9$.
3. Finally, add 7: $9+7 = 16$.

Thus, the answer is $16$.

To solve$20-4+6-5$:

1. Start with the first operation:$20 - 4 = 16$.

2. Next, add 6: $16 + 6 = 22$.

3. Finally, subtract 5: $22-5=17$.

So, the correct answer is$17$.

According to the rules of the order of arithmetic operations, we solve the exercise from left to right since it only has addition and subtraction operations:

$3+4=7$

$7-1=6$

$6+40=46$

Due to the fact that the exercise only involves addition and subtraction operations, we will solve it from left to right:

$25+6=31$

$31-19=12$

$12+7=19$

Due to the fact that the exercise only involves addition and subtraction operations, we will solve it from left to right:

$32-4=28$

$28-19=9$

$9+3=12$

$12-7=5$