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Please help with with number 3,4 and e-g please and also explain how you got the answer

Please help with with number 3,4 and e-g please and also explain how you got the answer-example-1
User TehTris
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1 Answer

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e: 1/2 x (2)=8*2 x=16
f:(-4/3)(-3/4 x)=9(-4/3) x=-36/3= -12 x=-12
g(-8/7)(-7/8 x)=(-8/7)(-21/64) Cross simplify and you get 3/8 x=3/8

User Henklein
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