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3 votes
If 4x + 2 = 11, what is the value of 2x - 12

2 Answers

4 votes

Solving Equations

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Let's solve the problem given to us today! The problem is the following:


\mapsto\quad\textbf{If 4x + 2 = 11, find the value of 2x - 12.}

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First, we will solve the equation; then we'll plug the value of x into the expression.

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Given equation:
4x+2=11

Subtract 2 from both sides:
4x=9

Divide both sides by 4:
x=9/4

Convert to a decimal:
x=2.25

Plug 2.25 into the expression:
2(2.25)-12

Multiply:
4.5-12

Subtract:
-7.5

Therefore, the value of the expression is -7.5.

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User Reed Collins
by
7.9k points
1 vote
the answer is: x = 6

step by step:
the goal is to isolate X on one side

first, let’s set one side to zero so
2x - 12 = 0

next, add 12 on each side
2x - 12 = 0
+12. +12

2x = 12

then, isolate X by dividing by 2
2x = 12
————
2. 2

x = 6
User Dan Stowell
by
8.2k points

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