Question

4*(2-х)+13*х=-10 Решите уравнение

Answer 1

4*(2-х)+13*х=-10. 8-4x+13x+10=0 9x=-18 X=-2

Answer 2

4(2-х)+13х= -10
8-4х+13х= -10
9х=-10-8
9х= -18
х= -18/9
х= -2
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проверка
4(2-(-2)) + 13*(-2) = -10
16+ (-26) = -10
-10 = -10