Hi,
Here is my work. I have factored an expression.
[tex] - (20 - 4x - 5x \times 2) \times 20 - 7x \times 2 \\ - (20 - 4x - 10x) \times 20 - 7x \times 2 \\ - (20 - 4x - 10x) \times 20 - 14x \\ - 2((20 - 4x - 10x) \times 10 + 7x)\\ - 2((20 - 14x) \times 10 + 7x) \\ - 2(200 - 140x + 7x) = - 2(200 - 133x)[/tex]
Hope this helps.
r3t40
