Question

1. 1/3(7x-1)=1/4
please do fast

Answer 1

x in (-oo:+oo)

(1/3)*(7*x-1) = 1/4 // - 1/4

(1/3)*(7*x-1)-(1/4) = 0

(1/3)*(7*x-1)-1/4 = 0

1/3*(7*x-1)-1/4 = 0

(1/3*4*(7*x-1))/4-1/4 = 0

1/3*4*(7*x-1)-1 = 0

28/3*x-7/3 = 0

(28/3*x-7/3)/4 = 0

(28/3*x-7/3)/4 = 0 // * 4

28/3*x-7/3 = 0

28/3*x-7/3 = 0 // + 7/3

28/3*x = 7/3 // : 28/3

x = 7/3/28/3

x = 1/4

x = 1/4

Answer 2

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(7x-1)= 1/4 × 3/1.1
(7x-1) = 0.285
7x = 0.825 + 1
7x = 1.825
x = 1.825/7
x = 0.260 ans.