Solve for: 2(9 \times 5-5 \times 5)-1

Expression: $2\left( 9 \times 5-5 \times 5 \right)-1$

Multiply the numbers

$2\left( 45-5 \times 5 \right)-1$

Multiply the numbers

$2\left( 45-25 \right)-1$

Subtract the numbers

$2 \times 20-1$

Multiply the numbers

$40-1$

Subtract the numbers

$39$