Find a number such that 30% of it is the root of the equation 3 (5-2x) = 4 (x-3) – 2 (5-3x) – 11
| August 12, 2021 | education
First, find the root of the equation:
Let’s open the brackets and get:
15 – 6x = 4x – 12 – 10 + 6x – 11.
Let’s give similar terms and get:
15 – 6x = 10x – 12 – 10 – 11.
15 – 6x = 10x – 33.
Read, -16x = -48.
x = 48/16 = 3.
Find the number:
x * 0.3 = 3.
x = 3 / 0.3 = 10.
Answer: 10.
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