15=11+0.40r

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Solution for 15=11+0.40r equation:


Simplifying
15 = 11 + 0.40r

Solving
15 = 11 + 0.40r

Solving for variable 'r'.

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

Add '-0.40r' to each side of the equation.
15 + -0.40r = 11 + 0.40r + -0.40r

Combine like terms: 0.40r + -0.40r = 0.00
15 + -0.40r = 11 + 0.00
15 + -0.40r = 11

Add '-15' to each side of the equation.
15 + -15 + -0.40r = 11 + -15

Combine like terms: 15 + -15 = 0
0 + -0.40r = 11 + -15
-0.40r = 11 + -15

Combine like terms: 11 + -15 = -4
-0.40r = -4

Divide each side by '-0.40'.
r = 10

Simplifying
r = 10

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