x+30%x=-1,3
x + 30% x = -1,3
=>x+0,3x=-1,3
=>1,3x=-1,3
=>x=-1
x +30%x = -1,3
\(x+30\%x=-1,3\)
\(x\left(1+30\%\right)=-1,3\)
\(x\left(1+0,3\right)=-1,3\)
\(x\cdot1,3=-1,3\)
\(x\cdot=\frac{-1,3}{1,3}=-1\)
\(x+30\%x=-1,3\)
\(x+\frac{30}{100}x=-1,3\)
\(x.\left(\frac{30}{100}+1\right)=-1,3\)
\(x.1,3=-1,3\)
\(x=-1,3:1,3\)
\(x=-1\)
Chúc bn học tốt nhé! @good luck
1. Tính nhanh.
1,3 x 2994 x 3 + 0,65 x 986 x 6 -1,3 x 5940
(30,5 - 15,5) x 70 + 30 x (30,5-15,5) -500
x+30%x=-1,3
x+30%x=-1,3
x(30%+1)=-1,3
x*13/10=-13/10
x=-13/10:13/10
x=-1
X+30%X=-1,3
x +30%x=-1,3
x(1+\(\frac{30}{100}\))=-1,3
x.\(\frac{130}{100}\)=-\(\frac{130}{100}\)
x=-\(\frac{130}{100}\):\(\frac{130}{100}\)=-1
x+30% x = 1,3
1. tìm x thỏa mãn x+30%x=-1,3
Tìm x, biết
a) 0 , 5. x − 2 3 . x = 7 12
b) x + 30 % x = − 1 , 3
x+30%.x= -1,3