Hello there, and welcome to Brainly!
In the following question, you are solving for the variable, x. Note the equal sign, what you do to one side of the equation, you do to the other.
Do the opposite of PEMDAS. PEMDAS is the order of operation, and stands for:
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
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First, add 2 to both sides of the equation:
10x - 2 (+2) = 38 (+2)
10x = 38 + 2
10x = 40
Next, divide 10 from both sides of the equation:
(10x)/10 = (40)/10
x = 40/10
x = 4
x = 4 is your answer.
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