Question

hello zadithegreat you give me answer of my question but plzzzz explain .me why 28-21 ..plzzzz my question is 8x+21/4=3x+7.​

Answer 1

Answer:

x = 7/20

Step-by-step explanation:

8x + 21/4 = 3x + 7

8x - 3x = 7 - 21/4

Take LCM of 7,21/4

LCM = 4

5x = (28-21)/4

5x = 7/4

x = 7/4 ÷ 5

x = 7/4 × 1/5

x = 7/20

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