Question

tìm x : 12 x X + X x 23 =1645

Answer 1

\(12\times x+x\times23=1645\)

\(x\times\left(12+23\right)=1645\)

\(x\times35=1645\)

\(x=1645:35=47\)

Answer 2

12 x X + X x 23 = 1645

X x ( 12 + 23 ) = 1645

X x 35 = 1645

X  = 1645 : 35

X = 47

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