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To solve for x, we need to isolate it on one side of the equation.
0.72 = 0.4(x + 1.4)
First, distribute 0.4 to both terms inside the parentheses:
0.72 = 0.4x + 0.56
Now, we can subtract 0.56 from both sides to isolate 0.4x:
0.72 - 0.56 = 0.4x
0.16 = 0.4x
To solve for x, divide both sides by 0.4:
0.16/0.4 = x
x = 0.4
Therefore, x = 0.4.