elias5284
18.06.2020 •
Mathematics
The heights of X, Y, Z are 1.73m, 1.65m and 1.75m. If X is taller than Y, and shorter than Z. How tall is each person
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Ответ:
x = 7
Step-by-step explanation:
Simply because:
5(1 + x) = 40
(1 * 5 + x * 5) = 40
(5 + 5x) = 40 5 + 5x = 40
5 + -5 + 5x = 40 + -5
0 + 5x = 40 + -5
5x = 40 + -5
5x = 35
x = 7