To solve equations an effective method consists of:
Group the terms with a variable on one side of equality, usually the first member, and the independent ones (without being accompanied by the variable) on the other side.
Operate whenever possible to simplify the expression. This implies eliminating parentheses and denominators if any.
Isolate the unknown or variable.
To pass elements from one side of equality to the other, it must be taken into account that:
If they are adding or subtracting they go to the other side with the opposite sign.
If they are multiplying they pass dividing and vice versa, but the sign does not change when changing sides.
Applied as mentioned above in the given equation:
-3+1+10*x=x+4
10*x-x=4+3-1
(10-1)*x=6
9*x=6
The simplification of a fraction consists in transforming it into a simpler equivalent fraction.
In the simplification of fractions, numerator and denominator are divided by the same number. In this case it is divided by 3 and you get: