(R+7)(r-4)=0

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Solution for (R+7)(r-4)=0 equation:


Simplifying
(R + 7)(r + -4) = 0

Reorder the terms:
(7 + R)(r + -4) = 0

Reorder the terms:
(7 + R)(-4 + r) = 0

Multiply (7 + R) * (-4 + r)
(7(-4 + r) + R(-4 + r)) = 0
((-4 * 7 + r * 7) + R(-4 + r)) = 0
((-28 + 7r) + R(-4 + r)) = 0
(-28 + 7r + (-4 * R + r * R)) = 0
(-28 + 7r + (-4R + rR)) = 0

Reorder the terms:
(-28 + -4R + 7r + rR) = 0
(-28 + -4R + 7r + rR) = 0

Solving
-28 + -4R + 7r + rR = 0

Solving for variable 'R'.

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

Add '28' to each side of the equation.
-28 + -4R + 7r + 28 + rR = 0 + 28

Reorder the terms:
-28 + 28 + -4R + 7r + rR = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -4R + 7r + rR = 0 + 28
-4R + 7r + rR = 0 + 28

Combine like terms: 0 + 28 = 28
-4R + 7r + rR = 28

Add '-7r' to each side of the equation.
-4R + 7r + -7r + rR = 28 + -7r

Combine like terms: 7r + -7r = 0
-4R + 0 + rR = 28 + -7r
-4R + rR = 28 + -7r

Reorder the terms:
-28 + -4R + 7r + rR = 28 + -7r + -28 + 7r

Reorder the terms:
-28 + -4R + 7r + rR = 28 + -28 + -7r + 7r

Combine like terms: 28 + -28 = 0
-28 + -4R + 7r + rR = 0 + -7r + 7r
-28 + -4R + 7r + rR = -7r + 7r

Combine like terms: -7r + 7r = 0
-28 + -4R + 7r + rR = 0

The solution to this equation could not be determined.

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