II. Look at the picture and answer the questions:
12
1. Is Alex (11) playing cricket?
2. Is Ana (5) swimming?
3. Are Dan (2) and Pam (8) running?
4. Is Sandy (10) surfing? |
5. What is Lily (7) doing?
260
495
Ответы на вопрос:
0,83х+0,56х-0,92х-0,83х=(0,83х-0,83х)+0,56х-0,92х=-0,36х
а) х=-4,5
-0,36*(-4,5)=1,62
б) -0,36*25/3=9/3=3
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