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Big Ideas Math Integrated I, 2016 View details

2. Solving Inequalities Using Addition or Subtraction

Finish the assignment

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Exercise 44 Page 66

How can we isolate y on the left-hand side?

y=6

Practice makes perfect

To solve the equation, we have to isolate y on one side of the equation. By dividing both sides of the equation by -3, we can remove the coefficient from y.

-3y=-18

DivEqn

.LHS /(-3).=.RHS /(-3).

-3y/-3=-18/-3

DivNegNeg

- a/- b=a/b

y=18/3

CalcQuot

Calculate quotient

y=6

To check that we have the correct solution, we can substitute y=6 into the original equation.

-3y=-18