standard_description: Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)
problem_activity: Task
Decide if the equations are true or false. Explain your answer.
$2+5 = 6$
$3 + 4 = 2 + 5$
$8 = 4 + 4$
$3 + 4 + 2 = 4 + 5$
$5 + 3 = 8 + 1$
$1 + 2 = 12$
$12 = 10 + 2$
$3 + 2 = 2 + 3$
$32 = 23$


aligns: no