Asked by Kenya
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.
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.
Answers
Answered by
PsyDAG
Treat the inequality like an equation. The only exception is when you multiply/divide both sides by a negative number. Then the inequality reverses.
-4z+8<-27+z
Add 4z and 27 to both sides.
35 < 5z
The "less than or equal" sign can be obtained by pressing your <alt/option> key along with the <comma> key (at least on a Mac). Likewise, the "more than or equal" sign can be obtained by pressing your <alt/option> key along with the <period> key.
3(5+x)≤18
Divide both sides by 3.
5 + x ≤ 6
y/2+5>8
Mulitply both sides by 2.
y + 10 > 16
You should be able to take them from here.
I hope this helps. Thanks for asking.
-4z+8<-27+z
Add 4z and 27 to both sides.
35 < 5z
The "less than or equal" sign can be obtained by pressing your <alt/option> key along with the <comma> key (at least on a Mac). Likewise, the "more than or equal" sign can be obtained by pressing your <alt/option> key along with the <period> key.
3(5+x)≤18
Divide both sides by 3.
5 + x ≤ 6
y/2+5>8
Mulitply both sides by 2.
y + 10 > 16
You should be able to take them from here.
I hope this helps. Thanks for asking.