6(7-x)=36 6(12-x)=36x 6(16+x)=1/36 8(18+x)=1/64 (1/7)7+x=49 (1/6)6+x=36 2x*3x=36...

Question

6(7-x)=36
6(12-x)=36x
6(16+x)=1/36
8(18+x)=1/64
(1/7)7+x=49
(1/6)6+x=36
2x*3x=36
5(2x-1)*5(x-1)=5
(5/7)x=1,4
5x*2-x=0,4
Решите пожалуйста.

Answer 1

1) 42-6x=36
-6x=36-42
-6x=-6
x=1
2) 72-6x=36x
-6x-36x=-72
-42x=-72
x=1.71...
3) 96+6x=1/36
6x=1/36-96
6x=-95.9...
x=-15.9...
4) 144+8x=1/64
8x=1/64-144
x=17.9...
5) 7+1/7x=49
1/7x=42
x=6
6) 6+1/6x=36
1/6x=30
x=5
7) 6x^2=36
x^2=6
x=+-√6
8) (10x-5)*(5x-5)=5
50x^2-25x-50x^2+25-5=0
-5=0
8) x=7/20
9) 10x-x=0.4
9x=0.4
x=0.04...