Question

(7b-9b):7+(4a+4a-7b)=... a=1/3 b=5
Trzeba uprościc i rozwiązac

Answer 1

(7b-9b):7+ (4a+4a-7b) = (-2b):7 + (8a-7b) = -2/7 b+8a-7b = 8a-7 i 2/7 b

 

a=1/3

b=5

 

(7*5-9*5):7 + (4*1/3 + 4*1/3 - 7*5) = (35-45):7 + (2 i 2/3 - 35)= -10: 7 = -1 i 3/7 + (-32 i 1/3) = 33 i 19/21