Question

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

Answer 1

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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Answer 2

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
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2. 2

x = 6