Solve 10x − 4 = 136

The solution of 10x − 4 = 136 is x = 14.

10x - 4 = 136\ \Rightarrow\ x = 14

Explain it step by step in chat Make a short video of it

The lines y = 10x − 4 and y = 136 meet at x = 14. 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.
$10x - 4 = 136$
2
Add 4 to both sides:
$10x - 4 + 4 = 136 + 4 \ \Rightarrow\ 10x = 140$
3
Divide both sides by 10:
$\frac{10x}{10} = \frac{140}{10} \ \Rightarrow\ x = 14$
4
Check: put x = 14 back into the equation.
$10\cdot14 - 4 = 140 - 4 = 136 \checkmark$

LaTeX source of the formulas on this page

\[ 10x - 4 = 136\ \Rightarrow\ x = 14 \]
\[ 10x - 4 = 136 \]
\[ 10x - 4 + 4 = 136 + 4 \ \Rightarrow\ 10x = 140 \]
\[ \frac{10x}{10} = \frac{140}{10} \ \Rightarrow\ x = 14 \]
\[ 10\cdot14 - 4 = 140 - 4 = 136 \checkmark \]

Trying values of x in 10x − 4 = 136

x	10x − 4	Equals 136?
12	116	no
13	126	no
14	136	yes
15	146	no
16	156	no

Questions

What is x in 10x − 4 = 136?

The solution of 10x − 4 = 136 is x = 14.

How do you solve 10x − 4 = 136?

Add 4 to both sides to get 10x = 140, then divide both sides by 10 to get x = 14.

How do I check the answer?

Replace x by 14: 10(14) − 4 = 136, which is 136.

Solve 10x − 4 = 136

How to work it out

Trying values of x in 10x − 4 = 136

Questions

Similar equations