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Problems Involving Difference of Positive and Negative Numbers

Simplify:5 x-...

Question

Simplify:5(x-4)-3(x-4)+7(x-4)

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Solution

We have 5(x-4)-3(x-4)+7(x-4)

Multiply the number outside the bracket to inside
We get

[5x-(54)]-[3x-(34)]+[7x-(7*4)]

=5x-20-(3x-12)+7x-28
=5x-20-3x+12+7x-28
=9x-36
(This is the answer)

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