5-3(5x + 2) = 4(7 - 3x) + 1

x = -10

Step-by-step explanation:

open the brackets

5-3(5x)-3(2) = 4(7)-4(3x)+1

5-15x-6 = 28-12x+1

-15x+12x = 29+1

3x = 30

x= -10

x = -10

Step-by-step explanation:

5 - 3 ( 5x + 2 ) = 4 ( 7 - 3x ) + 1

Distribute 3 in Left hand side and 4 in right hand side.

5 - 15x - 6 = 28 - 12 x + 1

Calculate the like terms.

5 - 6 - 15 x = 28 + 1 - 12 x

-1 - 15 x = 29 - 12 x

Move variables in the opposite side and change their sign.

- 15x + 12x = 29 + 1

- 3 x = 30

Divide both side of equation by -3.

-3x / -3 = 30 / - 3

x = - 10

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.