The solution to -1/2 (4)-1 is -3

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-1/2 (4)-1

Solution

- \frac{1}{2} (4) - 1

- 3

Solution steps

- \frac{1}{2} (4) - 1

Follow the PEMDAS order of operations

Multiply and divide (left to right)

- \frac{1}{2} (4) : - 2

- \frac{1}{2} (4)

Apply rule:

(a) = a

(4) = 4

= - \frac{1}{2} \cdot 4

- \frac{1}{2} \cdot 4 = - 2

- \frac{1}{2} \cdot 4

Convert element to fraction:

4 = \frac{4}{1}

= - \frac{1}{2} \cdot \frac{4}{1}

Apply the fraction rule:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

\frac{1}{2} \cdot \frac{4}{1} = \frac{1 \cdot 4}{2 \cdot 1}

= - \frac{1 \cdot 4}{2 \cdot 1}

\frac{1 \cdot 4}{2 \cdot 1} = 2

\frac{1 \cdot 4}{2 \cdot 1}

\frac{1 \cdot 4}{2 \cdot 1} = \frac{4}{2}

\frac{1 \cdot 4}{2 \cdot 1}

Multiply the numbers:

1 \cdot 4 = 4

= \frac{4}{2 \cdot 1}

Multiply the numbers:

2 \cdot 1 = 2

= \frac{4}{2}

= \frac{4}{2}

Divide the numbers:

\frac{4}{2} = 2

= 2

= - 2

= - 2

= - 2 - 1

Add and subtract (left to right)

- 2 - 1 : - 3

- 2 - 1

- 2 - 1 = - 3

= - 3

= - 3

(3)^{2} - 2 (3) - 8

(3)^{2} - 2 (3) + 1

3^{6} + 3^{2}

4 - 20 + 100 - 500 + 2500

3 8^{2} - 1 7^{2} \div 4 7^{2} - 361