Do not smoke this! It is terrible! My friends almost died after smoking it!
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7h+39=60 Take away 39 from both sides (called isolating your variable) 7h=21 Divide by seven, because (I assume) you are looking for h, not 7h h=3 And to check: 7(3)+39=60 21+39=60 60=60
7h - 2 - 51 is an expression NOT an equation. An expression cannot be solved for the value of a variable.
No, (5h + 2h^2) is not equivalent to (7h). The expression (5h + 2h^2) contains a term (2h^2), which is a quadratic term, while (7h) is a linear term. Therefore, they represent different mathematical expressions.
19h which = 7PM in the evening