We have the original equation:
7x + 3 = 52
Isolate the variable x by subtracting 3 to both sides of the equation:
7x+3-3=52-3
Simplify the previous expression:
7x+0=49 or 7x = 49
Isolate the variable x dividing by 7 to both sides of the equation:
(7/7)x = 49/7
Simplify the previous expression, and finally, we have:
x = 7.