SOLUTION: david and daniel have a total of 120 coins.liz and maria total have 153 coins.david an d liz have total of 127 coins.how many coins do daniel and maria have together
I will solve the problem combining grouping and re-grouping.
Daniel + Maria = Daniel + Maria + David + Liz - (David + Liz) = (Daniel + David) + (Liz + Maria) - (David + Liz) = 120 + 153 - 127 = 146.
ANSWER. Daniel and Maria have together 146 coins.
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The problem can be solved and the solution can be presented by other ways, too;
but all these solutions/ways orbit around the same idea.