Math
100

30% of 600

180

200

3.6+15.8-6.2+9.2-7.2=

15.2

300

Combine like terms: 3x-2y+6z+7x+9z+2y-8y+x

-7z+5x

16x-8y+8z

400

3(2x+8)-4+8(2x-4)=54

x=3


500

2x2 – 7x + 6 = 0

x1= 3/2, x2= 2

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