27.09.2020

68

7x-2x=5x a-3a=-2a 10a-18a=-8a -4b-2b=6b 3bc-17bc=-14bc

28a2-17a2=11a2 4b2c-12b2c=-8b2 17a2b2-9a2b2=8a2b2 24b2c3-(-17)b2c3=41b2c3

69

A²bc+2abca+(-3bca²)=0

(-aba²)+7a²ba+a³b=7a³b

7a²+(-3a²)+(-4a²)=0

70

3abc-7abc=-4abc 5a-6a=-1a

9a3b2-9a3b2=0a3b2 7a-a=6a

71

18a²b-4a²b+6a²b=20a^ab

4b³c⁴+8b³c⁴-14b³c⁴=-2b³c⁴

2,1a²e-1,6a²e+1,5a²e=2a²e

5,18a²p³+3,22a²p³-2,4a²p³=6a²p³

6a⁸b²+7a⁸b²+(-2)a⁸b²=11a⁸b

0c²e⁵+4c²e⁵-16c²e⁵=-12c²e⁵

6,4a⁴k+2,14a⁴k=-0,06a⁴k

7,14ax²+4,36ax²-12,8ax²=-1,3ax²