Question

tìm a biết :

0,08 × a = 1,2 × 100

2,6 : (3,7 – a) = 1

Answer 1

\(a,0,08\times a=1,2\times100\\ \Rightarrow0,08\times a=120\\ \Rightarrow a=120:0,08\\ \Rightarrow a=1500\\ b,2,6:\left(3,7-a\right)=1\\ \Rightarrow3,7-a=2,6:1\\ \Rightarrow3,7-a=2,6\\ \Rightarrow a=3,7-2,6\\ \Rightarrow a=1,1\)

Answer 2

0,08 × a = 1,2 × 100

=>0,08x a=120

=>a=120:0,08

=>a=1500

2,6 : (3,7 – a) = 1

=>3,7-a=2,6:1

=>a=3,7-2,6

=>a=1,1