-388=7(7r+1)-3

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Solution for -388=7(7r+1)-3 equation:


Simplifying
-388 = 7(7r + 1) + -3

Reorder the terms:
-388 = 7(1 + 7r) + -3
-388 = (1 * 7 + 7r * 7) + -3
-388 = (7 + 49r) + -3

Reorder the terms:
-388 = 7 + -3 + 49r

Combine like terms: 7 + -3 = 4
-388 = 4 + 49r

Solving
-388 = 4 + 49r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-49r' to each side of the equation.
-388 + -49r = 4 + 49r + -49r

Combine like terms: 49r + -49r = 0
-388 + -49r = 4 + 0
-388 + -49r = 4

Add '388' to each side of the equation.
-388 + 388 + -49r = 4 + 388

Combine like terms: -388 + 388 = 0
0 + -49r = 4 + 388
-49r = 4 + 388

Combine like terms: 4 + 388 = 392
-49r = 392

Divide each side by '-49'.
r = -8

Simplifying
r = -8

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