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barxatty [35]
3 years ago
6

10+2r=8 need the answer now

Mathematics
2 answers:
Tcecarenko [31]3 years ago
7 0

Answer:

r = -1

Step-by-step explanation:

subtract 10 from both sides

2r = -2

divide both sides by 2

r = -1

natulia [17]3 years ago
3 0

Simplifying

10 = 2r + -8

Reorder the terms:

10 = -8 + 2r

Solving

10 = -8 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.

10 + -2r = -8 + 2r + -2r

Combine like terms: 2r + -2r = 0

10 + -2r = -8 + 0

10 + -2r = -8

Add '-10' to each side of the equation.

10 + -10 + -2r = -8 + -10

Combine like terms: 10 + -10 = 0

0 + -2r = -8 + -10

-2r = -8 + -10

Combine like terms: -8 + -10 = -18

-2r = -18

Divide each side by '-2'.

r = 9

Simplifying

r = 9

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