Answer
1-R
1.1-t 1.2-u
1.1.1-w 1.1.2-x 1.1.3-y 1.1.4-z
1.2.1-w 1.2.2-x 1.2.3-y 1.2.4-z
Work Step by Step
1-R
1.1-t 1.2-u
1.1.1-w 1.1.2-x 1.1.3-y 1.1.4-z
1.2.1-w 1.2.2-x 1.2.3-y 1.2.4-z
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