Solve 12x − 2 = 190

The solution of 12x − 2 = 190 is x = 16.

12x - 2 = 190\ \Rightarrow\ x = 16

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The lines y = 12x − 2 and y = 190 meet at x = 16. The solution of the equation is the x-coordinate of the point where the two sides are equal.

How to work it out

1
The goal is to get x alone. Undo the operations in the opposite order: first the subtraction, then the multiplication.
$12x - 2 = 190$
2
Add 2 to both sides:
$12x - 2 + 2 = 190 + 2 \ \Rightarrow\ 12x = 192$
3
Divide both sides by 12:
$\frac{12x}{12} = \frac{192}{12} \ \Rightarrow\ x = 16$
4
Check: put x = 16 back into the equation.
$12\cdot16 - 2 = 192 - 2 = 190 \checkmark$

LaTeX source of the formulas on this page

\[ 12x - 2 = 190\ \Rightarrow\ x = 16 \]
\[ 12x - 2 = 190 \]
\[ 12x - 2 + 2 = 190 + 2 \ \Rightarrow\ 12x = 192 \]
\[ \frac{12x}{12} = \frac{192}{12} \ \Rightarrow\ x = 16 \]
\[ 12\cdot16 - 2 = 192 - 2 = 190 \checkmark \]

Trying values of x in 12x − 2 = 190

x	12x − 2	Equals 190?
14	166	no
15	178	no
16	190	yes
17	202	no
18	214	no

Questions

What is x in 12x − 2 = 190?

The solution of 12x − 2 = 190 is x = 16.

How do you solve 12x − 2 = 190?

Add 2 to both sides to get 12x = 192, then divide both sides by 12 to get x = 16.

How do I check the answer?

Replace x by 16: 12(16) − 2 = 190, which is 190.

Solve 12x − 2 = 190

How to work it out

Trying values of x in 12x − 2 = 190

Questions

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