2(-14+r)-(-3r-5) answer
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Step-by-step explanation:
2[-14 + r] + -1[-3r + -5] = 0
[-14 * 2 + r * 2] + -1[-3r + -5] = 0
[-28 + 2r] + -1[-3r + -5] = 0
Reorder the terms:
-28 + 2r + -1[-5 + -3r] = 0
-28 + 2r + [-5 * -1 + -3r * -1] = 0
-28 + 2r + [5 + 3r] = 0
Reorder the terms:
-28 + 5 + 2r + 3r = 0
Combine like terms: -28 + 5 = -23
-23 + 2r + 3r = 0
Combine like terms: 2r + 3r = 5r
-23 + 5r = 0
Solving
-23 + 5r = 0
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '23' to each side of the equation.
-23 + 23 + 5r = 0 + 23
Combine like terms: -23 + 23 = 0
0 + 5r = 0 + 23
5r = 0 + 23
Combine like terms: 0 + 23 = 23
5r = 23
Divide each side by '5'.
r = 4.6
Simplifying
r = 4.6
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