PLEASE HELP ME, I REALLY NEED HELP WITH THESE. PLEASE DONT ANSWER IF YOU DONT KNOW HOW. I REALLY NEED HELP!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Xelga [282]4 years ago

7 0

1. x= 20
2. x=10
3. x=9
4. x=11
5. x=36.7

lubasha [3.4K]4 years ago

4 0

1)
5x + 15 =115
5x = 100
x = 20
2)
4x+28=68
4x = 40
x = 10
3)
10x-40=50
10x = 90
x = 9
4)
10x-40+50=180
10x+10=180
10x = 170
x = 17
5)
6x-10 +3x+100 = 180
9x+90=180
9x = 90
x = 9

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