Question

6) х/3+х/5=8 7) (6х+7)/7-3=(5х-3)/8 8)10(3х-2)-3(5х+2)+5(11-4х)=25 9)-3(2,1m-1)+4,8=-6,7m+9,4 10)5-(1,y+1/3)6=2 1/3y-5 1/2

Answer 1

Ответы смотри на фото

Answer 2

6. To solve for x, we can start by finding a common denominator for the fractions on the left-hand side:

scssCopy code
x/3 + x/5 = 8
(5x/15) + (3x/15) = 8
8x/15 = 8
x = 15

So the solution is x = 15.

7. We can start by simplifying both sides of the equation by getting rid of the fractions:

scssCopy code
(6x + 7)/7 - 3 = (5x - 3)/8
8[(6x + 7)/7 - 3] = 8[(5x - 3)/8]
8(6x + 7)/7 - 24 = 5x - 3
8(6x + 7)/7 = 5x + 21
48x + 56 = 35x + 147
13x = 91
x = 7

So the solution is x = 7.

8. We can start by simplifying the left-hand side of the equation:

scssCopy code
10(3x - 2) - 3(5x + 2) + 5(11 - 4x) = 25
30x - 20 - 15x - 6 + 55 - 20x = 25
-5x + 29 = 25
-5x = -4
x = 4/5

So the solution is x = 4/5.

9. We can start by simplifying both sides of the equation:

diffCopy code
-3(2.1m - 1) + 4.8 = -6.7m + 9.4
-6.3m + 3 + 4.8 = -6.7m + 9.4
-6.3m + 7.8 = -6.7m + 9.4
0.4m = 1.6
m = 4

So the solution is m = 4.

10. We can start by simplifying both sides of the equation:

makefileCopy code
5 - (1y + 1/3)6 = 2 1/3y - 5 1/2
5 - 6y - 2 = 7y/3 - 11/2
1/2 - 6y = 7y/3 - 11/2
6 - 36y = 14y - 33
50y = 39
y = 39/50

So the solution is y = 39/50.