Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
2. Solving Two-Step Equations
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Exercise 70 Page 93

How can you isolate y on the right-hand side?

y=3.8

Practice makes perfect
To solve the equation we need to isolate y on one side of the equation. By subtracting 3.2 from both sides, we can cancel it from the right-hand side.
7=3.2+y
7-3.2=3.2+y-3.2
3.8=y
y=3.8
Therefore, y=3.8 is the solution to the equation. To check that we have the correct solution, we can substitute y=3.8 into the original equation and simplify.
7=3.2+y
7? =3.2+ 3.8
7=7
Since the left-hand side and right-hand side are equal, y=3.8 is the correct solution.