Решите уравнения 1)х=2/3x+1 2)x-1/2=3/4x 3)x-2/3=5/6x

1) x = 2/3x+1 x-2/3x = 1 3/3x-2/3x = 1 1/3x = 1 x = 1*3 = 3 2) x-1/2 = 3/4x x-3/4x = 1/2 4/4x-3/4x = 1/2 1/4x = 1/2 x = (1/2)*4 x = 2 3) x-2/3 = 5/6x x-5/6x = 2/3 6/6x-5/6x = 2/3 1/6x = 2/3 x = (2/3)*6 x = 4 4) 1 4/5y = y+4 1 4/5y -y = 4 4/5y = 4 y = 4*(5/4) y = 5 5) 2/3y-1/3 = 5/9y 2/3y-5/9y = 1/3 6/9y-5/9y = 1/3 1/9y = 1/3 y = 1/3*(9/1) y = 3 6) 3/4y-2/3 = 7/12y 3/4y-7/12y = 2/3 9/12y-7/12y = 2/3 2/12y = 2/3 y = (2/3)*(12/2) y = 4

1)делай так 1 м действием 3×10+1=30