The Like terms of the given expression are 4x and 7x ; -3 and 1.
Those terms which have the same variables are raised with the same power.
For example, 5t^3 and 6t^3 are like terms since the variable is same, and it is raised to the same power 3.
Given expression;
4 x - 3 + 7 x + 1
Like terms are;
4x and 7x
-3 and 1
Thus, option C is correct.
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