Question

0.4 (a + 1.4) = 0.72
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Answer 1

0.4 (a + 1.4) = 0.72

0.4a + 0.56 = 0.72

0.4a = 0.72 - 0.56

0.4a = 0.16

a = 0.16/0.40 = 16/40 = 4/10 = 0.4

Answer 2

0.4( a+ 1.4) = 0.72

0.4 a + 0.4× 1.4 = 0.72

0.4 a + 0.56 = 0.72

0.4 a = 0.72 - 0.56

0.4 a = 0.16

a = 0.16/0.4

a = 4