Question

X×45+x × 55=1000

6/x+1/2=2

Giải hộ cám ơn

Answer 1

a, X x 45 + X x 55 = 1000

X x (45 + 55) = 1000

X x 100 = 1000

X = 1000 : 100

X = 10

b, \(\frac{6}{x}+\frac{1}{2}=2\)

\(\frac{6}{x}=2-\frac{1}{2}\)

\(\frac{6}{x}=\frac{3}{2}\)

\(\frac{6}{x}=\frac{6}{4}\)

\(x=4\)

Answer 2

a ) \(x\times45+x\times55=1000\)

\(x\times\left(45+55\right)=1000\)

\(x\times100=1000\)

\(x=1000\div100=10\)

b ) \(\frac{6}{x}+\frac{1}{2}=2\)

\(\frac{6}{x}=2-\frac{1}{2}\)

\(\frac{6}{x}=\frac{3}{2}\)

\(=>x=6\div3\times2=4\)