Здравствуйте. Помогите пожалуйста по математике, 2-ой класс, 3-я задача
3.Өрнектерді оқы. Оларды қандай топтарға бөлуге болады?
100-(26+14); b+(12+40); 85-(a-10);
b-30; 900+(700-600); 300+(200-100);
600-200-100; 78+(d-40);
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