21+4(7+y)-13=73

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Solution for 21+4(7+y)-13=73 equation:


Simplifying
21 + 4(7 + y) + -13 = 73
21 + (7 * 4 + y * 4) + -13 = 73
21 + (28 + 4y) + -13 = 73

Reorder the terms:
21 + 28 + -13 + 4y = 73

Combine like terms: 21 + 28 = 49
49 + -13 + 4y = 73

Combine like terms: 49 + -13 = 36
36 + 4y = 73

Solving
36 + 4y = 73

Solving for variable 'y'.

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

Add '-36' to each side of the equation.
36 + -36 + 4y = 73 + -36

Combine like terms: 36 + -36 = 0
0 + 4y = 73 + -36
4y = 73 + -36

Combine like terms: 73 + -36 = 37
4y = 37

Divide each side by '4'.
y = 9.25

Simplifying
y = 9.25

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