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15 votes
1. Solve for x: x/12 + 15 = 648

x=__
2.Solve for x: −4(1.75 + x) = 18
x=__
3.Solve for x: 6x - 9 = 42
x=__

User Somer
by
4.2k points

2 Answers

7 votes

Answer:

1. x = 7596

2. x = -6.25

3. x = 8.5

hope this helps:)

User Jialin
by
4.3k points
3 votes

Answer:


1)(x)/(12) +15=648\\\\(x)/(12)=648-15\\\\(x)/(12)=633\\\\x=633*12\\\\x=7596


2) -4(1.75+x)=18\\\\-7-4x=18\\\\-4x=18+7\\\\-4x=25\\\\x=-(25)/(4)


3)6x-9=42\\\\6x=42+9\\\\6x=51\\\\x=(51)/(6)

User Rasclatt
by
5.2k points