Solve 10x − 2 = −32

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

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

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

LaTeX source of the formulas on this page

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

Trying values of x in 10x − 2 = −32

x	10x − 2	Equals -32?
-5	-52	no
-4	-42	no
-3	-32	yes
-2	-22	no
-1	-12	no

Questions

What is x in 10x − 2 = −32?

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

How do you solve 10x − 2 = −32?

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

How do I check the answer?

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

Solve 10x − 2 = −32

How to work it out

Trying values of x in 10x − 2 = −32

Questions

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