Math, asked by mohansingh81093, 8 months ago

The numerical expression 3/8 + (-5/7) = -19/56 show that

Answers

Answered by MrSudipTO
4

LHS: 3/8 + (-5/7)

=3/8 -5/7

=(3×7-5×8)/7×8

=(21-40)/56

= -19/56= RHS( proved )

Answered by nandhini030205
3

Step-by-step explanation:

 \frac{3}{8}  +  \frac{ - 5}{7}  =  \frac{ - 19}{56}

LHS

lcm \: of \: 8 \: and \: 7 \: is \: 56.

 \frac{3}{8}  \times  \frac{7}{7}   +  \frac{ - 5}{7}  \times  \frac{8}{8}

 =  \frac{21}{56}  +  \frac{ - 40}{56}

 =  \frac{21 - 40}{56}

 =  \frac{ - 19}{56}

LHS = RHS

Hence proved.

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