Question

a) 1/2-(2x-3/4)=-5/8  

b) -1/2-3/2(x+5/3)=-1/4  

Giúp mình nhé cảm ơn các bạn

Answer 1

a) \(\frac{1}{2}-\left(2x-\frac{3}{4}\right)=-\frac{5}{8}\)

\(\frac{1}{2}-2x+\frac{3}{4}=-\frac{5}{8}\)

\(\frac{1}{2}+\frac{3}{4}-2x=-\frac{5}{8}\)

\(1,25-2x=-0,625\)

\(2x=1,875\)

\(x=0,9375\)

b) \(-\frac{1}{2}-\frac{3}{2}.\left(x+\frac{5}{3}\right)=-\frac{1}{4}\)

\(-\frac{1}{2}-\frac{3}{2}.x-\frac{5}{2}=-\frac{1}{4}\)

\(-\frac{1}{2}-\frac{5}{2}-\frac{3}{2}.x=-\frac{1}{4}\)

\(-3-\frac{3}{2}.x=-\frac{1}{4}\)

...

đến đây thì b tự tính nha!