Solve 10x − 10 = −50

The solution of 10x − 10 = −50 is x = -4.

10x - 10 = -50\ \Rightarrow\ x = -4

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The lines y = 10x − 10 and y = -50 meet at x = -4. 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.
$10x - 10 = -50$
2
Add 10 to both sides:
$10x - 10 + 10 = -50 + 10 \ \Rightarrow\ 10x = -40$
3
Divide both sides by 10:
$\frac{10x}{10} = \frac{-40}{10} \ \Rightarrow\ x = -4$
4
Check: put x = -4 back into the equation.
$10\cdot(-4) - 10 = -40 - 10 = -50 \checkmark$

LaTeX source of the formulas on this page

\[ 10x - 10 = -50\ \Rightarrow\ x = -4 \]
\[ 10x - 10 = -50 \]
\[ 10x - 10 + 10 = -50 + 10 \ \Rightarrow\ 10x = -40 \]
\[ \frac{10x}{10} = \frac{-40}{10} \ \Rightarrow\ x = -4 \]
\[ 10\cdot(-4) - 10 = -40 - 10 = -50 \checkmark \]

Trying values of x in 10x − 10 = −50

x	10x − 10	Equals -50?
-6	-70	no
-5	-60	no
-4	-50	yes
-3	-40	no
-2	-30	no

Questions

What is x in 10x − 10 = −50?

The solution of 10x − 10 = −50 is x = -4.

How do you solve 10x − 10 = −50?

Add 10 to both sides to get 10x = -40, then divide both sides by 10 to get x = -4.

How do I check the answer?

Replace x by -4: 10(-4) − 10 = -50, which is -50.

Solve 10x − 10 = −50

How to work it out

Trying values of x in 10x − 10 = −50

Questions

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