= ( 7,5 + 3,5 ) * x = 39,93
= 11 * x = 39,93
x = 39,93 : 11
x = 3,69
x : 4 + x = 3,75
x : ( 4 + 1 ) = 3,75
x : 5 = 3,75
x = 3,75 x 5
x = 18,75
a,7,5*x+x*3,5=39,93
(7,5+3,5)*x=39,93
11*x=39,93
x=39,93:11
x=3,63
a, =x*(7,5+3,5)=39,93
=x*11=39,93
x=39,93:11
x=3,63
b, tớ chịu
0,25*x+x = 3,75
1,75*x=3,75
x=3,75:1,75
x= 3
0,25 * x + x = 3,75
1,75 * x = 3,75
x = 3,75 : 1,75
x = 3
a) 7,5 * x + x * 3,5 = 39,93
x * (7,5+3,5) = 39,93
x * 11 = 39,93
x = 39,3 : 11 = 3,63
b) x : 4 + x = 3,75
x *\(\frac{1}{4}\)+ x = 3,75
x * (\(\frac{1}{4}\)+ 1) = 3,75
x * \(\frac{5}{4}\) = 3,75
x = 3,75 : \(\frac{5}{4}\)
x = \(\frac{15}{4}\)* \(\frac{4}{5}\)
x = 3
k cho tớ nè <3