Question

verify in the problem x/3 + 1 = 7/15 x = - 8/5​

Answer 1

Answer:

x/3 +1 = 7/15

x/3 = 7/15 -1

x/3 = 7-15 / 15

x/3 = -8 / 15

x= (-8)(3)/15

So,

x= -8/5

Answer 2

Answer:

(i) Let the required number be x.

So, five times the number will be 5x.

∴ 5x = 40

(ii) Let the required number be x.

So, when it is increased by 8, we get x + 8.

∴ x + 8 = 15

(iii) Let the required number be x.

So, when 25 exceeds the number, we get 25 - x.

∴ 25 - x = 7

(iv) Let the required number be x.

So, when the number exceeds 5, we get x - 5.

∴ x - 5 = 3

(v) Let the required number be x.

So, thrice the number will be 3x.

∴ 3x - 5 = 16

(vi) Let the required number be x.

So, 12 subtracted from the number will be x - 12.

∴ x - 12 = 24

(vii) Let the required number be x.

So, twice the number will be 2x.

∴ 19 - 2x = 11

(viii) Let the required number be x.

So, the number when divided by 8 will be

x

8

.

∴

x

8

= 7

(ix) Let the required number be x.

So, four times the number will be 4x.

∴ 4x - 3 = 17

(x) Let the required number be x.

So, 6 times the number will be 6x.

∴ 6x = x + 5