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underwoodnaesha

  • 3 years ago

how do i simplify 3(3z-4)-(20z-5)

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  1. math456
    • 3 years ago
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    multiply first! 9z-12-20z+5 then solve!

  2. kelly541
    • 3 years ago
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    Use the distributive property: 3(3z-4) - (20z-5) = 9z-12 - (20z-5) Since there is a "-' sign in front of the second half of the expression, the signs will change 9z-12 -20z+5 Simplify the rest: -11z - 7

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