Solve 10x + 11 = −19

The solution of 10x + 11 = −19 is x = -3.

10x + 11 = -19\ \Rightarrow\ x = -3

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The lines y = 10x + 11 and y = -19 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 addition, then the multiplication.
$10x + 11 = -19$
2
Subtract 11 from both sides:
$10x + 11 - 11 = -19 - 11 \ \Rightarrow\ 10x = -30$
3
Divide both sides by 10:
$\frac{10x}{10} = \frac{-30}{10} \ \Rightarrow\ x = -3$
4
Check: put x = -3 back into the equation.
$10\cdot(-3) + 11 = -30 + 11 = -19 \checkmark$

LaTeX source of the formulas on this page

\[ 10x + 11 = -19\ \Rightarrow\ x = -3 \]
\[ 10x + 11 = -19 \]
\[ 10x + 11 - 11 = -19 - 11 \ \Rightarrow\ 10x = -30 \]
\[ \frac{10x}{10} = \frac{-30}{10} \ \Rightarrow\ x = -3 \]
\[ 10\cdot(-3) + 11 = -30 + 11 = -19 \checkmark \]

Trying values of x in 10x + 11 = −19

x	10x + 11	Equals -19?
-5	-39	no
-4	-29	no
-3	-19	yes
-2	-9	no
-1	1	no

Questions

What is x in 10x + 11 = −19?

The solution of 10x + 11 = −19 is x = -3.

How do you solve 10x + 11 = −19?

Subtract 11 from 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) + 11 = -19, which is -19.

Solve 10x + 11 = −19

How to work it out

Trying values of x in 10x + 11 = −19

Questions

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