Given: 3(2x − 5) = 15 Prove: x = 5
Set x = 5:
3(2(5) - 5)
3(10 - 5)
3(5)
15
So if x = 5, then:
3(2x − 5) = 15
Set x = 5:
3(2(5) - 5)
3(10 - 5)
3(5)
15
So if x = 5, then:
3(2x − 5) = 15
Given: 3(2x − 5) = 15 Prove: x = 5
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