Առաջադրանք ՝
(-11)+(-2)+6+5+(-7)+(-21) = -11 -2 +6 +5 -7 -21 = 30
8 +14+(-21)+(-36)-(-1) = 8 + 14 — 21 — 36 + 1 = -34
(-33)+25+(-40)-(-25)+80 = -33 +25 — 40 + 25+ 80 = 57
(-74+27)-15 = -62
(-301-21)+56 = -266
(-43-91)-15 = -149
(-39+21)+11 = 29
15-6x-(4-2x) = 11 — 4x
87x+(-13y)-(x+y) = 86x — 14y
12x-(-3x-2y) = 15x + 2y
21-(30+xy) = -9 — xy
a22bc + 2abca + (−3bca22) =
(−aba22) + 7a22ba + a23b;
7a22 + (−3a22) + (−4a22):
Դասագրքից վարժ. 67, 71 , կրկնել
Վարժ․ 67
ա) 2x + 3x = 5x
բ) 3m + 5m = 8m
գ) a + 4a + a = 6a
դ) 3b + b + b = 5b
ե) 2a + 4a + 6a = 12a
զ) 4ab + ab + 12ab = 17ab
է) 17a 2 + 13a2 + 11a2 = 41a2
ը) 15a2b + 14a2b +7a2b = 36a2b
թ) 43ce2 + (−17)ce2 + 11ce2 = 37ce2
ժ) 25b2c2 + (−27)b2c2 + 7b2c2 = 5b2c2
Վարժ․ 71
![](https://blogkarapet.files.wordpress.com/2022/10/image-30.png?w=1024)
ա․ = 20a2b2
բ․ = 11a8b2
գ․ = -2b3c4
դ․ = -12c2e5
ե․ = 2a2e
զ․ = 0a4k
է․ = 6a2p3
ը․ = -1.3ax2