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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 the 0.4 to both terms inside the parentheses:
0.72 = 0.4x + 0.4(1.4)
Next, simplify:
0.72 = 0.4x + 0.56
Now, subtract 0.56 from both sides of the equation:
0.72 - 0.56 = 0.4x + 0.56 - 0.56
0.16 = 0.4x
Finally, divide both sides of the equation by 0.4:
0.16/0.4 = 0.4x/0.4
0.4 = x
Therefore, the solution is x = 0.4.