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2a-1=19 solve. two step equation
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2 votes
2a-1=19 solve. two step equation

User Gardener
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2 Answers

2 votes
2a - 1 = 19...add 1 to both sides
2a - 1 + 1 = 19 + 1....simplify
2a = 20...divide both sides by 2
(2/2)a = 20/2
1a (or just a) = 10
User Netdjw
by
8.8k points
1 vote
2a - 1 = 19
2a = 20
a = 10
User Kalanit
by
8.4k points
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