Solve 5*(8-3)-4*(2-7)-5*(1-6)=

$$5 \cdot ( 8 - 3 ) - 4 \cdot ( 2 - 7 ) - 5 \cdot ( 1 - 6 ) =$$

Evaluate

$$70$$

Solution Steps

Subtract 3 from 8 to get 5.

$$5\times 5-4\left(2-7\right)-5\left(1-6\right)$$

Multiply 5 and 5 to get 25.

$$25-4\left(2-7\right)-5\left(1-6\right)$$

Subtract 7 from 2 to get -5.

$$25-4\left(-5\right)-5\left(1-6\right)$$

Multiply 4 and -5 to get -20.

$$25-\left(-20\right)-5\left(1-6\right)$$

The opposite of -20 is 20.

$$25+20-5\left(1-6\right)$$

Add 25 and 20 to get 45.

$$45-5\left(1-6\right)$$

Subtract 6 from 1 to get -5.

$$45-5\left(-5\right)$$

Multiply 5 and -5 to get -25.

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

The opposite of -25 is 25.

$$45+25$$

Add 45 and 25 to get 70.

$$70$$

Factor

$$2\times 5\times 7$$