20=9+4(x+1)

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Solution for 20=9+4(x+1) equation: 


Simplifying
20 = 9 + 4(x + 1)

Reorder the terms:
20 = 9 + 4(1 + x)
20 = 9 + (1 * 4 + x * 4)
20 = 9 + (4 + 4x)

Combine like terms: 9 + 4 = 13
20 = 13 + 4x

Solving
20 = 13 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
20 + -4x = 13 + 4x + -4x

Combine like terms: 4x + -4x = 0
20 + -4x = 13 + 0
20 + -4x = 13

Add '-20' to each side of the equation.
20 + -20 + -4x = 13 + -20

Combine like terms: 20 + -20 = 0
0 + -4x = 13 + -20
-4x = 13 + -20

Combine like terms: 13 + -20 = -7
-4x = -7

Divide each side by '-4'.
x = 1.75

Simplifying
x = 1.75

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