Back to 9.7 Solve a Formula for a Specific Variable

9.7 Exercise 187

Avg difficulty 2.5

Solve.

Solve $a + b = 90$ for $a .$

OpenStax Prealgebra 2e, 9.7 Solve a Formula for a Specific Variable, exercise 187

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Adapted from Prealgebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Prealgebra 2e. Imported at revision 77a933c.