Adv. Math

How do you do these problems...

1) y/2+5>8

2) -4z+8<-27+z

3) 3(5+x)<_18

I need help mostly on #2 but also on the others. Oh and on #3 the sign is an less than or equal to sign. =3

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  1. Just solve these like a basic algebra problem, getting the variable on a side by itself. Let's look at #2.
    -4z + 8 < -27 + z
    +4z +4z
    _________________________
    8 < -27 + 5z
    +27 +27
    _____________________________
    35 < 5z
    divide both sides by 5 and
    7 < z
    Check it with a couple of different numbers replacing z to make sure it is right.
    Hope this helps! Good luck!

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