30=7x+3-4

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Solution for 30=7x+3-4 equation:


Simplifying
30 = 7x + 3 + -4

Reorder the terms:
30 = 3 + -4 + 7x

Combine like terms: 3 + -4 = -1
30 = -1 + 7x

Solving
30 = -1 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
30 + -7x = -1 + 7x + -7x

Combine like terms: 7x + -7x = 0
30 + -7x = -1 + 0
30 + -7x = -1

Add '-30' to each side of the equation.
30 + -30 + -7x = -1 + -30

Combine like terms: 30 + -30 = 0
0 + -7x = -1 + -30
-7x = -1 + -30

Combine like terms: -1 + -30 = -31
-7x = -31

Divide each side by '-7'.
x = 4.428571429

Simplifying
x = 4.428571429

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