1*0.34+(x-1)*0.21=1.18

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Solution for 1*0.34+(x-1)*0.21=1.18 equation: 


Simplifying
1 * 0.34 + (x + -1) * 0.21 = 1.18

Multiply 1 * 0.34
0.34 + (x + -1) * 0.21 = 1.18

Reorder the terms:
0.34 + (-1 + x) * 0.21 = 1.18

Reorder the terms for easier multiplication:
0.34 + 0.21(-1 + x) = 1.18
0.34 + (-1 * 0.21 + x * 0.21) = 1.18
0.34 + (-0.21 + 0.21x) = 1.18

Combine like terms: 0.34 + -0.21 = 0.13
0.13 + 0.21x = 1.18

Solving
0.13 + 0.21x = 1.18

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-0.13' to each side of the equation.
0.13 + -0.13 + 0.21x = 1.18 + -0.13

Combine like terms: 0.13 + -0.13 = 0.00
0.00 + 0.21x = 1.18 + -0.13
0.21x = 1.18 + -0.13

Combine like terms: 1.18 + -0.13 = 1.05
0.21x = 1.05

Divide each side by '0.21'.
x = 5

Simplifying
x = 5

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