Solve 3x − 2 = −32

The solution of 3x − 2 = −32 is x = -10.

3x - 2 = -32\ \Rightarrow\ x = -10

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The lines y = 3x − 2 and y = -32 meet at x = -10. 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.
$3x - 2 = -32$
2
Add 2 to both sides:
$3x - 2 + 2 = -32 + 2 \ \Rightarrow\ 3x = -30$
3
Divide both sides by 3:
$\frac{3x}{3} = \frac{-30}{3} \ \Rightarrow\ x = -10$
4
Check: put x = -10 back into the equation.
$3\cdot(-10) - 2 = -30 - 2 = -32 \checkmark$

LaTeX source of the formulas on this page

\[ 3x - 2 = -32\ \Rightarrow\ x = -10 \]
\[ 3x - 2 = -32 \]
\[ 3x - 2 + 2 = -32 + 2 \ \Rightarrow\ 3x = -30 \]
\[ \frac{3x}{3} = \frac{-30}{3} \ \Rightarrow\ x = -10 \]
\[ 3\cdot(-10) - 2 = -30 - 2 = -32 \checkmark \]

Trying values of x in 3x − 2 = −32

x	3x − 2	Equals -32?
-12	-38	no
-11	-35	no
-10	-32	yes
-9	-29	no
-8	-26	no

Questions

What is x in 3x − 2 = −32?

The solution of 3x − 2 = −32 is x = -10.

How do you solve 3x − 2 = −32?

Add 2 to both sides to get 3x = -30, then divide both sides by 3 to get x = -10.

How do I check the answer?

Replace x by -10: 3(-10) − 2 = -32, which is -32.

Solve 3x − 2 = −32

How to work it out

Trying values of x in 3x − 2 = −32

Questions

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