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Answer:
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Step-by-step explanation:
Simplifying
2.1(0.2x + -1.4) = 1.3(0.4x + -3.5)
Reorder the terms:
2.1(-1.4 + 0.2x) = 1.3(0.4x + -3.5)
(-1.4 * 2.1 + 0.2x * 2.1) = 1.3(0.4x + -3.5)
(-2.94 + 0.42x) = 1.3(0.4x + -3.5)
Reorder the terms:
-2.94 + 0.42x = 1.3(-3.5 + 0.4x)
-2.94 + 0.42x = (-3.5 * 1.3 + 0.4x * 1.3)
-2.94 + 0.42x = (-4.55 + 0.52x)
Solving
-2.94 + 0.42x = -4.55 + 0.52x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-0.52x' to each side of the equation.
-2.94 + 0.42x + -0.52x = -4.55 + 0.52x + -0.52x
Combine like terms: 0.42x + -0.52x = -0.1x
-2.94 + -0.1x = -4.55 + 0.52x + -0.52x
Combine like terms: 0.52x + -0.52x = 0.00
-2.94 + -0.1x = -4.55 + 0.00
-2.94 + -0.1x = -4.55
Add '2.94' to each side of the equation.
-2.94 + 2.94 + -0.1x = -4.55 + 2.94
Combine like terms: -2.94 + 2.94 = 0.00
0.00 + -0.1x = -4.55 + 2.94
-0.1x = -4.55 + 2.94
Combine like terms: -4.55 + 2.94 = -1.61
-0.1x = -1.61
Divide each side by '-0.1'.
x = 16.1
Simplifying
x = 16.1
or 12 * 12 = 144
or 12 * 12 * 12 = 1728