Номер 192

Спростіть вираз.

1) (74 + x) + 38 = x + (74 + 38) = x + 112;

	+	7	4
		3	8
	1	1	2

2) 238 + (a + 416) = a + (238 + 416) = a + 654;

	+	2	3	8
		4	1	6
		6	5	4

3) y + 324 + 546 = y + (324 + 546) = y + 870;

	+	3	2	4
		5	4	6
		8	7	0

4) 2753 + m + 4199 = m + (2753 + 4199) = m + 6952;

	+	2	7	5	3
		4	1	9	9
		6	9	5	2

5) (b + 457) + (143 + 872) = b + (457 + 143) + 872 = b + (600 + 872) = b + 1472;

	+	6	0	0
		8	7	2
	1	4	7	2

6) (2235 + c) + (4671 + 1765) = c + (2235 + 1765) + 4671 = c + (4000 + 4671) = c + 8671.

	+	4	0	0	0
		4	6	7	1
		8	6	7	1