Question

30:6*7-21:3+0:8= 20:4-3*6:9+4*4:8= 6*4:8*5-35:5+0*7= 264+6-40+100-200=

Answer 1

1)28, (2)2,375, (3)8, (4)130

Answer 2

Let's solve these equations step by step:

1. $30:6 \times 7 - 21:3 + 0:8$ First, perform the divisions: $30:6 = 5$ and $21:3 = 7$. $5 \times 7 - 7 + 0:8$ Multiply $5$ by $7$: $35 - 7 + 0:8$ Divide $0$ by $8$: $0$ $35 - 7 + 0 = 28$

2. $20:4 - 3 \times 6:9 + 4 \times 4:8$ $20:4 = 5$ and $6:9 = \frac{2}{3}$. $5 - 3 \times \frac{2}{3} + 4 \times 4:8$ Perform the multiplication and division: $3 \times \frac{2}{3} = 2$, and $4:8 = 0.5$. $5 - 2 + 4 \times 0.5$ $5 - 2 + 2 = 5$

3. $6 \times 4:8 \times 5 - 35:5 + 0 \times 7$ $4:8 = 0.5$ and $35:5 = 7$. $6 \times 0.5 \times 5 - 7 + 0 \times 7$ $15 - 7 + 0 \times 7$ $15 - 7 = 8$

4. $264 + 6 - 40 + 100 - 200$ Combine the numbers: $264 + 6 - 40 + 100 - 200$ $70$

So, the results of the equations are as follows:

1. $28$
2. $5$
3. $8$
4. $70$