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masya89 [10]
3 years ago
11

2/5 = m/70 please solve

Mathematics
2 answers:
suter [353]3 years ago
7 0

Answer:  The required solution is m = 28.

Step-by-step explanation:  We are given to solve the following equation :

\dfrac{2}{5}=\dfrac{m}{70}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

We will be using the following rule of cross-multiplication :

\dfrac{a}{b}=\dfrac{c}{d}\\\\\\\Rightarrow a\times d=c\times b.

From equation (i), we have

\dfrac{2}{5}=\dfrac{m}{70}\\\\\\\Rightarrow 2\times70=m\times 5\\\\\Rightarrow 5m=140\\\\\Rightarrow m=\dfrac{140}{5}\\\\\Rightarrow m=28.

Thus, the required solution is m = 28.

denis23 [38]3 years ago
5 0
2/5=m/70
Use cross multiply
70*2=5*m
140=5m
Divided 5 to each side
140/5=5m/5
m=28
Check:
2/5=m/70
Substitute m with 28
2/5=28/70
2/5=4/10
2/5=2/5. As a result, m=28. Hope it help!
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