An algebra problem by Niranjan Panwar

Algebra Level 1

The equation − m x + 1 = 13 − 4 ( x + 3 ) - mx + 1 = 13 - 4(x + 3) is an identity if m m is equal to ___ \text{\_\_\_} .

0 4 2 1

Niranjan Panwar by Niranjan Panwar , 29, India

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1 solution

Kay Xspre
Mar 21, 2016

Expand to 1 − m x = 13 − 4 x − 12 1-mx = 13-4x-12 or 1 − m x = 1 − 4 x 1-mx = 1-4x , which means ( 4 − m ) x = 0 ⇒ m = 4 (4-m)x = 0\Rightarrow m = 4

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