Three times the sum of a number and 4 is equal to -9. Visit Mathway on the web. The algebra section allows you to expand factor or simplify virtually any expression you choose.
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IXL offers hundreds of Algebra 1 skills to explore and learn. It also has commands for splitting fractions into partial fractions combining several fractions into one and cancelling common factors within a fraction. 4 - 2z3 34. Download free on iTunes.