4(4x - 3)=-76 explain you solution process

4(4x - 3)=-76

mutiply the bracket by 4

(4)(4x)= 16x

(4)(-3)= -12

16x-12= -76

move -12 to the other side

sign changes from -12 to +12

16x-12+12= -76+12

16x=-76+12

16x= -64

divide both sides by 16 to get x by itself

16x/16= -64/16

Cross out 16 and 16, divide by 16 and then becomes 1*1*x= x

x=-64/16

x=-4

step-by-step explanation:

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,