Question

Find the value of ‘a’: 0.3 a + 0.5 = 0.4 a – 0.2​

Answer 1

0.3 a + 0.5 = 0.4 a - 0.2

0.5 + 0.2 = 0.4 a - 0.3 a

0.7 = 0.1 a

Multiply by 10 on both sides,

0.7 × 10 = 0.1 a × 10

7 = a

Therefore the value of a is 7 .

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Answer 2

Step-by-step explanation:

0.5+0.2=0.4a-0.3a

0.7=0.1a

0.7/0.1=a

=7

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