Question

(x-1/2)*5/3 = 7/4 -1/2

5050m²=...dam²...m²            27m²33cm²=...m²

3m²21dm²=....m²             2dm²45cm²=...cm²

Answer 1

\(\left(x-\dfrac{1}{2}\right)\times\dfrac{5}{3}=\dfrac{7}{4}-\dfrac{1}{2}\)
\(\left(x-\dfrac{1}{2}\right)\times\dfrac{5}{3}=\dfrac{5}{4}\)
\(x-\dfrac{1}{2}=\dfrac{5}{4}:\dfrac{5}{3}\)
\(x-\dfrac{1}{2}=\dfrac{3}{4}\)
\(x=\dfrac{3}{4}+\dfrac{1}{2}\)
\(x=\dfrac{3}{4}+\dfrac{2}{4}\)
Vậy \(x=\dfrac{5}{4}\)
__________________
5050m² = 50dam² 50m²            27m²33cm² = 27,0033m²

3m²21dm²= 3,21m²                   2dm²45cm²= 245cm²

Answer 2

\(\left(x-\dfrac{1}{2}\right)\times\dfrac{5}{3}=\dfrac{7}{4}-\dfrac{1}{2}\)

=>\(\left(x-\dfrac{1}{2}\right)\times\dfrac{5}{3}=\dfrac{5}{4}\)

=>\(\left(x-\dfrac{1}{2}\right)=\dfrac{5}{4}:\dfrac{5}{3}\)

=>\(\left(x-\dfrac{1}{2}\right)=\dfrac{3}{4}\)

=>\(x=\dfrac{3}{4}+\dfrac{1}{2}\)

=>\(x=\dfrac{5}{4}\)

Vậy x=\(\dfrac{5}{4}\)

5050m²=0dam²5050m²

27m²33cm²=27,0033m²

3m²21dm²=3,21m² 

 2dm²45cm²=245cm²