Solve 11x + 10 = −89

The solution of 11x + 10 = −89 is x = -9.

11x + 10 = -89\ \Rightarrow\ x = -9

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The lines y = 11x + 10 and y = -89 meet at x = -9. 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 addition, then the multiplication.
$11x + 10 = -89$
2
Subtract 10 from both sides:
$11x + 10 - 10 = -89 - 10 \ \Rightarrow\ 11x = -99$
3
Divide both sides by 11:
$\frac{11x}{11} = \frac{-99}{11} \ \Rightarrow\ x = -9$
4
Check: put x = -9 back into the equation.
$11\cdot(-9) + 10 = -99 + 10 = -89 \checkmark$

LaTeX source of the formulas on this page

\[ 11x + 10 = -89\ \Rightarrow\ x = -9 \]
\[ 11x + 10 = -89 \]
\[ 11x + 10 - 10 = -89 - 10 \ \Rightarrow\ 11x = -99 \]
\[ \frac{11x}{11} = \frac{-99}{11} \ \Rightarrow\ x = -9 \]
\[ 11\cdot(-9) + 10 = -99 + 10 = -89 \checkmark \]

Trying values of x in 11x + 10 = −89

x	11x + 10	Equals -89?
-11	-111	no
-10	-100	no
-9	-89	yes
-8	-78	no
-7	-67	no

Questions

What is x in 11x + 10 = −89?

The solution of 11x + 10 = −89 is x = -9.

How do you solve 11x + 10 = −89?

Subtract 10 from both sides to get 11x = -99, then divide both sides by 11 to get x = -9.

How do I check the answer?

Replace x by -9: 11(-9) + 10 = -89, which is -89.

Solve 11x + 10 = −89

How to work it out

Trying values of x in 11x + 10 = −89

Questions

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