Объяснение:
1)9t/7n - 2t/7n. =7t/7n=t/n
2)5x-3y/8z + 3x-13y/8z=
=(5x-3y + 3x-13y)/8z=(8x-16y)/8z=8(x-2y)/8z=(x-2y)/z
(9t-2t) /7n=7t/7n=t/n
(5x-3y+3x-13y)/8z=(8x-26y)/8z=8(x-3,25y)/8z= (x-3,25y)/z
Объяснение:
1)9t/7n - 2t/7n. =7t/7n=t/n
2)5x-3y/8z + 3x-13y/8z=
=(5x-3y + 3x-13y)/8z=(8x-16y)/8z=8(x-2y)/8z=(x-2y)/z
Объяснение:
(9t-2t) /7n=7t/7n=t/n
(5x-3y+3x-13y)/8z=(8x-26y)/8z=8(x-3,25y)/8z= (x-3,25y)/z