# 8th grade math in pre-algebra

posted by .

6(2x+3)=42

• 8th grade math in pre-algebra -

6(2x+3)=42

12x + 18 = 42

12x = 42 - 18

12x = 24

x = 24/12

x = 2

• 8th grade math in pre-algebra -

a cabinet has shelves that are 12 1/2in.apart.on one shelf,katherine stacked a CD player that is 4 5/8 in. high on top of an amplifier that is 6 3/4 in.high. how much space was shace was left above the CD player?

## Similar Questions

1. ### 8th grade pre algebra

i am having trouble with solving inequalitys... how do you solve t+6>-3

im in advanced math so i do 8th grade math and i don't understand how too gragh the fractions in equations like y=2/3x+1

I'm actually in 7th grade, but I'm doing 8th grade pre-algebra, but anyway, here: I'm supposed to simplify these four problems and I don't really understand how: 28s (15 power) ____ 42s (12 power) 4m+(n[7th power]m) 63m(5 power)n(6 …

how to use a grid and lenghts of line segments to give a geometric argument
5. ### pre algebra

my grade is 83.17 in pre algebra in college, but the final exam is worth 300 points. If I got a B or B- or a C on the final, what would my grade be overall?

Can you check the following questions,please?