What should be added to both sides of this equation to solve for the variable? r + (-12) = 19

Question

Mathematics

Livia Waller

11 March, 05:03

What should be added to both sides of this equation to solve for the variable? r + (-12) = 19

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Answers (2)

Know the Answer?

Joshua Potter · Answer 1

12

Step-by-step explanation:

Then the - 12 and + 12 will cancel out, so you're left with a clean isolated r on the left:

r - 12 + 12 = 19 + 12

r = 31

Ezekiel Ali · Answer 2

12

So,

r + - 12 + 12 = 19 + 12

r + 0 = 31

R=31