Объяснение:
(-2a3)^2*b^2*(3c^2)^2*a^3=
=4a^6*b^2*9c^4*a^3=36a^9b^2c^4
36*(2)^9*(1/4)^2*(1/2)^4=
=36*512*1/16*1/16=72
4n = 30 - 13m
n = 7,5 - 3,25m
- 13m - 3n = - 29
- 13m - 3( 7,5 - 3,25m ) = - 29
- 13m - 22,5 + 9,75m = - 29
- 3,25m = - 6,5
m = 2
n = 7,5 - 3,25•2 = 7,5 - 6,5 = 1