4 years ago

Which expression is equivalent to 4(3x+5y+2z)+3(x-z)

Mathematics

1 answer:

Anni [7]4 years ago

4 0

A. 12x+20y+8z...it's a simple distributive property question :)

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Step-by-step explanation:

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To make this easier, to get ride of the fractions, we can multiply both sides by 4

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now use the distributive property

$2x + 30 = 8 + 3x - 12\\$

now we want to isolate x to one side and isolate all the constants to the other

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to test, we can plug in back to the original

$\frac{1}{2}(34+15) = \frac{49}{2}\\\frac{8}{4} + \frac{3}{4}(34-4) = \frac{8}{4} + \frac{90}{4} = \frac{98}{4} = \frac{49}{2}$

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