Question

solve the following equation by trial and error method.
(a) x - 10 = -8
(b) 3x = 45
(c) 5m + 7 = 17
(d) 10x/3 = 20
(e) 3x - 4 = 2x -2
(f) 9y / 2 =18
(g) 7x -5=-7
(h) 10z=40​

Answer 1

Answer:

2

15

2

6

2

16/9

12/7

4

May be those are correct

Answer 2

Answer:

a)x=2

b)x=15

c)m=2

d)x=6

e)x=2

f)y=4

g)x= -2/7

h)z=4

Explanation:

a) x-10= -8

x= -8+10

x=2

b)3x=45

x=45/3

x=15

c)5m+7=17

5m=17-7

5m=10

m=10/5

m=2

d)10x/3=20

10x=3(20)

10x=60

x=60/10

x=6

e)3x-4=2x-2

3x-2x=-2+4

x=2

f)9y/2=18

9y=2(18)

9y=36

y=36/9

y=4

g)7x-5= -7

7x= -7+5

7x= -2

x= -2/7

h)10z=40

z=40/10

z=4.