1)3а+8а=1,87 2)7z-3z=5,12 3)2t+5t+3,18=25,3

Question

1)3а+8а=1,87

2)7z-3z=5,12

3)2t+5t+3,18=25,3

Answer 1

1)3а+8а=1,87 

11а=1,87 
а=1,87/11 
а=0,17

 

2)7 z - 3z = 5,12 
z * (7 - 3) = 5,12 
4z = 5,12 
z = 5,12 / 4 

z= 1,28

 

3)2t + 5t + 3,18 = 25,3 
2t + 5t = 25,3 - 3,18 
t(2+5) = 22,12 
7t = 22,12 
t = 22,12 / 7 = 3,16