Answer:
5(x+4) =30
-multiply 5 and x then multiply 5 and 4
- That gives you 5x+20=30
-subtract 20 from 30 and positive 20 that gives you 5x=30
-divide 5x by 5 that cancels each other out
-divide 30 by 5 that gives you x=6
-4(3x+2)=32
-multiply -4 by 3x that gives you -12x
-then multiply -4 by positive 2 that gives you -8
-now you have -12x-8=32
-add both sides by 8
- -12x=40
- divide 12x by 12 that cancels each other out
- divide 40 by 12
- that gives you 3.3 (repeating)
1/2(9x+15) =20
-multiply 1/2 by 9x that gives you 4.5x
-multiply 1/2 times 15 that gives you 7.5
- 4.5x+7.5=20
- subtract both sides by 7.5
-4.5x=20
- divide both sides by 4.5
- 4.5x divided by 4.5 cancels out
- 20 divided by 4.5 gives you 4.4 (repeating)
-4(1.5-x) =9
-multiply -4 by 1.5 that gives you -2.6
- multiply -4 by -x that gives you 4
- -2.6+4=9
- subtract both sides by 4
- 2.6x= 5
- divide 2.6x by 2.6 that cancels each other out
- divide 5 by 2.6 that gives you 1.9
(sorry I took so long Hope this helps!)
