Asystem of equations is shown below: equation a: 2c = d − 8 equation b: c = 3d + 8 which of the following steps should be performed to eliminate variable d first?
a. multiply equation b by 2.
b. multiply equation a by 2.
c. multiply equation b by 3.
d. multiply equation a by −3.

the temperature will be -18 just do 62 + (-40) + (-40)

step-by-step explanation:

18

step-by-step explanation:

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.