Question

решить уравнение 7(x-2.5)=4(3x+0.6) при x=3.88,x=3.99,x=-3.98,x=4,1

Answer 1

7(×-2.5)=4 (3×+0.6) 7× - 17.5 = 12× + 2.4 - 17.5 - 2.4 = 7× + 12× 5× = 19.9 × = 19.9 : 5 × = 3.98