Question

Tìm x biết:

x/-28=42/49

Answer 1

Giúp mình nha, mình đang cần gấp. Cho mik cảm ơn trước nha

Answer 2

Có \(\frac{x}{-28}\)=\(\frac{42}{49}\)

<=> x.49=-28.42

<=> x.49=-1176

<=> x     =-1176/49

<=>x      =-24

Answer 3

\(\frac{x}{-28}=\frac{42}{49}\)

=> \(\frac{x}{-28}=\frac{6}{7}\)

=> \(\frac{x:\left(-4\right)}{-28:\left(-4\right)}=\frac{6}{7}\)

=> \(x:\left(-4\right)=6\)

=> \(x=-24\)

Answer 4

\(\frac{x}{-28}=\frac{42}{49}\)

\(\Leftrightarrow49x=\left(-28\right)\cdot42\)

\(\Leftrightarrow49x=-1176\)

\(\Leftrightarrow x=-24\)

Answer 5

\(\frac{x}{-28}\)\(=\frac{42}{49}\)

\(\Rightarrow\)\(x.49=42.-28\)

\(\Rightarrow\)\(x.49=-1176\)

\(\Rightarrow\)\(x=-24\)

Hok tốt !

Answer 6

\(\frac{x}{-28}=\frac{42}{49}\)

49x = -28 . 42

49x = -1176

x = -24

Học tốt