Question

г) 3- 57t=1-3t
д) 18u-2=58u+1
е) 25z-7=3

Answer 1

г)3-5/7t=1-3/t
-5/7t+3/t=1-3
-5t+21t=-2*7
16t=-14
t=-14/16
t=-7/8
d)1/8u-2=5/8u+1
1/8u-5/8u=1+2
-4/8u=3
-1/2u=3
u=3:(-1/2)
u=3*(-2)
u=6
e)2/5z-7=3
2/5z=3+7
2/5z=10
z=10:2/5
z=10*5/2
z=50/2
z=25

Answer 2

Большое спасибо. :3