Evaulate:
`5xx(7-3)xx(4-2)-30`

Answer

To evaluate the expression \( 5 \times (7 - 3) \times (4 - 2) - 30 \), we can follow these steps:

### Step 1: Solve the expressions inside the parentheses
First, we need to evaluate the expressions in the parentheses:

1. \( 7 - 3 = 4 \)
2. \( 4 - 2 = 2 \)

So, we can rewrite the expression as:
\[ 5 \times 4 \times 2 - 30 \]

### Step 2: Perform the multiplication
Next, we will multiply the numbers together:

1. First, multiply \( 5 \times 4 \):
\[ 5 \times 4 = 20 \]

2. Now, multiply the result by \( 2 \):
\[ 20 \times 2 = 40 \]

So, now we have:
\[ 40 - 30 \]

### Step 3: Perform the subtraction
Finally, we subtract \( 30 \) from \( 40 \):
\[ 40 - 30 = 10 \]

### Final Answer
Thus, the final answer is:
\[ 10 \]

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