Solving Equations and Solving for a Variable
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Solving equations: Solve the linear expession, show your work and check your answer
#26. 5x + 7 = 0
#32. 14 = -5x - 21
Solving a variable: Solve each formula for the specified variable
#18. d = rt for r
The language of functions: For each formula express y as a function of x.
#22. y - x = 6
Solve each compound inequality. Write solution set in interval notation and graph it.
#50. -2 <3x + 1 <10
Solve absolue value expression.
#26. |x| - 10 = -3
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Solution Summary
This solution shows step-by-step calculations to determine the specified variable in various linear expressions.
Solution Preview
#26. 5x + 7 = 0
Answer: 5x + 7 = 0 -> 5x=-7 -> x=-7/5=-1.4. Check: 5*(-1.4)+7=-7+7=0. Yes.
#32. 14 = -5x - 21
Answer: 14 = -5x - 21 -> 5x=-21-14 -> 5x=-35 ...
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