Question

tìm X:

X - 15 + 4 x X=60

Answer 1

\(x-15+4x=60\)

\(\Leftrightarrow x+4x=60+15\)

\(\Leftrightarrow5x=75\)

\(\Leftrightarrow x=15\)

Answer 2

\(x-15+4\times x=60\)

\(\Rightarrow x+4x=60+15\)

\(\Rightarrow5x=75\)

\(\Rightarrow x=75\div5\Rightarrow x=15\)

Answer 3

giống các bn dưới thui

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