7+8r^2=4+5r^2

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Solution for 7+8r^2=4+5r^2 equation:


Simplifying
7 + 8r2 = 4 + 5r2

Solving
7 + 8r2 = 4 + 5r2

Solving for variable 'r'.

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

Add '-5r2' to each side of the equation.
7 + 8r2 + -5r2 = 4 + 5r2 + -5r2

Combine like terms: 8r2 + -5r2 = 3r2
7 + 3r2 = 4 + 5r2 + -5r2

Combine like terms: 5r2 + -5r2 = 0
7 + 3r2 = 4 + 0
7 + 3r2 = 4

Add '-7' to each side of the equation.
7 + -7 + 3r2 = 4 + -7

Combine like terms: 7 + -7 = 0
0 + 3r2 = 4 + -7
3r2 = 4 + -7

Combine like terms: 4 + -7 = -3
3r2 = -3

Divide each side by '3'.
r2 = -1

Simplifying
r2 = -1

Reorder the terms:
1 + r2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + r2 = 0

The solution to this equation could not be determined.

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