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3 votes
Plssss hep me




x+2+3x+1=15

User Jay Rizzi
by
4.9k points

2 Answers

3 votes

Explanation:

x=3

first add 2+ 1

then add x+3x

subtract 3 from both sides

4x+3(-3)=15(-3)

divide by 4 on both sides

4x/4=12/4

x=3

User Matzahboy
by
4.4k points
4 votes

Linear equations

Add up the numbers.

x + 3 + 3x = 15

Combine like terms.

4x + 3 = 15

Subtract 3 from both sides.

4x + 3 - 3 =15 - 3

Simplify

4x = 12

Divide both sides by the same factor.


\boldsymbol{\sf{(4x)/(4)=(12)/(4) }}

Simplify

x = 3

User Linkrules
by
4.7k points