0,4*(х-3)=0,5*(х+4)-2,5

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вопрос

0.4x - 1.2 = 0.5x + 2 - 2.5

Simplify both sides:

0.4x - 1.2 = 0.5x - 0.5

Now, let's isolate x:

0.4x - 0.5x = -1.2 + 0.5

-0.1x = -0.7

Now, divide by -0.1 to solve for x:

x = -0.7 / -0.1
x = 7

Therefore, the solution to the equation is x = 7.