Solve 2x − 3 = 25

The solution of 2x − 3 = 25 is x = 14.

2x - 3 = 25\ \Rightarrow\ x = 14

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The lines y = 2x − 3 and y = 25 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.
$2x - 3 = 25$
2
Add 3 to both sides:
$2x - 3 + 3 = 25 + 3 \ \Rightarrow\ 2x = 28$
3
Divide both sides by 2:
$\frac{2x}{2} = \frac{28}{2} \ \Rightarrow\ x = 14$
4
Check: put x = 14 back into the equation.
$2\cdot14 - 3 = 28 - 3 = 25 \checkmark$

LaTeX source of the formulas on this page

\[ 2x - 3 = 25\ \Rightarrow\ x = 14 \]
\[ 2x - 3 = 25 \]
\[ 2x - 3 + 3 = 25 + 3 \ \Rightarrow\ 2x = 28 \]
\[ \frac{2x}{2} = \frac{28}{2} \ \Rightarrow\ x = 14 \]
\[ 2\cdot14 - 3 = 28 - 3 = 25 \checkmark \]

Trying values of x in 2x − 3 = 25

x	2x − 3	Equals 25?
12	21	no
13	23	no
14	25	yes
15	27	no
16	29	no

Questions

What is x in 2x − 3 = 25?

The solution of 2x − 3 = 25 is x = 14.

How do you solve 2x − 3 = 25?

Add 3 to both sides to get 2x = 28, then divide both sides by 2 to get x = 14.

How do I check the answer?

Replace x by 14: 2(14) − 3 = 25, which is 25.

Solve 2x − 3 = 25

How to work it out

Trying values of x in 2x − 3 = 25

Questions

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