Solution equation: 8x = - 2 (x-4)

Solution equation: 8x = - 2 (x-4)

8X=-2(X-4),
8X=-2X+8,
8X+2X=8,
10X=8,
X=0.8.

6.8x + x = 15.6

6.8x+x=15.6
7.8x=15.6
x=15.6/7.8
x=2

8x + (15-x) * 6 = 160 to solve the equation

8x+(15-x)*6=160
8x+90-6x=160
2x=160-90
2x=70
x=35

Solving equation 15 * 6-8x = 10

15*6-8x=10
90-8x=10
8x=80
x=10

X-0.8x = 6

x-0.8x=6
0.2x=6
x=6÷0.2
x=30

Solution equation: 8x + x = 364 + X

8x+x=364+x
9x=364+x
9x-x=364
8x=364
x=45.5
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Solving equation x ^ 3 + x ^ 2 + 8x-4 = 0

The general form of cubic equation of one variable is X3 + SX2 + TX + U = 0. If we make a horizontal coordinate translation y = x + S / 3, then we can eliminate the quadratic term of the equation. So we only need to consider the cubic equation of form X3 = PX + Q. suppose that the solution X of the equation can be written as x = A-B, where a and B are undetermined parameters

Solving equation 0.8x * (x + 2) = x * x

0.8x^2+1.6x=x^2
0.8x^2-x^2+1.6x=0
-0.2x^2+1.6x=0
x(-0.2x+1.6)=0
That is, X1 = 0, X2 = 8

8x-4 "15-x" = 72 is to the equation

8x - 60 + 4x = 72
12x = 132
x = 11

How to solve equation 8x-48 = 72

8x=72+48
8x=120
x=120÷8
x=15