How do you simplify: #4(x + 5y) + 5x + y#?

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Answer 1 · 2016-11-08T16:39:14

#9x + 21y#

Step 1) Expand the term in parenthesis:

#4(x + 5y) + 5x +y =>#

#4x + 20y + 5x + y#

Step 2) Combine like terms and simplify:

#4x + 5x + 20y + y =>#

#(4 + 5)x + (20 + 1)y =>#

#9x + 21y#