Question

FIND (-3)M+1 *(-3)7 = (-3)56

Answer 1

$- 3m + 1 \times ( - 3)7 = ( - 3)56 \\ \\ - 3m - 21 = - 168 \\ \\ - 3m = - 168 + 21 \\ \\ - 3m = - 147 \\ \\ m = - 147 \div ( - 3) \\ \\ m = 49$

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Answer 2

Heya !
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★Linear Equation in One Variable ★
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=> -3M + 1 × (-3) 7 = (-3) 56

=> -3M - 21 = -168

[ Multiplying the terms ]


=> -3M = -168 + 21

=> -3M = -147

[ Transposing the terms ]


=> M = -147/-3

=> M = 49 ✔
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★Verification ★
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=> Put M = 49 in the given Equation :
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=> (-3) ( 49 ) + 1 × (-3)7 = (-3) 56

=> -147 - 21 = -168

=> -168 = -168


★L.H.S = R.H.S


[ Hence Verified !! ]
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Points to Remember :-

=> While Transposing the terms :

(+) changes to (-)

(-) Changes to (+)

(×) Changes to (÷)

(÷) Changes to (×)


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