Jane is Billy's sister, Jane is 3 years older than 2 times Billy's age. If Billy is 7 years old then how old is Jane?
2 answers:
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I'm assuming you want us to solve for the unknown variable z
Combine like terms on the right side
Use the distributive property on the left side
Add both sides by 20 to cancel out the "-20" on the left side
Divide both sides by 10
That is the value of the known variable, z, in this equation. Let me know if you need any clarifications, thanks!
~ Padoru
Answer:
Step-by-step explanation:
= ( √9 )³ = 27
= ∛27 = 3
= ( ∛125 )² = 25
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