Question 868049
Work from the inside out.
{{{5(4(3(2 + x)))=5(4(6 + 3x))}}}
{{{5(4(3(2 + x)))=5(24 + 12x)}}}
{{{5(4(3(2 + x)))=120+ 60x)}}}
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{{{5(-4(-3(2 - x)))=5(-4(-6 +3x))}}}
{{{5(-4(-3(2 - x)))=5(24-12x)}}}
{{{5(-4(-3(2 - x)))=120-60x))}}}
So then,
{{{5(4(3(2 + x)))-5(-4(-3(2 - x)))=120+ 60x-(120-60x)}}}
{{{5(4(3(2 + x)))-5(-4(-3(2 - x)))=120x}}}
You could have also pulled out all the multipliers,
{{{5(4(3(2 + x)))-5(-4(-3(2 - x)))=5(4)(3)(2+x-(-(-(2-x))))}}}
{{{5(4(3(2 + x)))-5(-4(-3(2 - x)))=60(2+x+(x-2))}}}
{{{5(4(3(2 + x)))-5(-4(-3(2 - x)))=60(2x)}}}
{{{5(4(3(2 + x)))-5(-4(-3(2 - x)))=120x}}}