Step-by-step explanation:
7r+18=-2(6-6r)
7r+18= -12+12r
7r = -12-18+12r
-30+12r = 7r
-30 = 7r-12r
-5r = -30
r = 30/5
<em><u>r = 6</u></em>
<u>hope</u><u> it</u><u> helps</u><u> you</u><u> ❤️</u>
Answer:
Step-by-step explanation:
here you go mate
step 1
-2x+3y-9-5y+2-4x equation
step 2
-2x+3y-9-5y+2-4x expand
-2x+3y+-9+-5y+2+-4x
step 3
-2x+3y+-9+-5y+2+-4x combine like terms
answer
-6x-2y-7
can i have brainliest if you dont mind?
Answer:
The mass of aluminum is 26.982 g/mol.
Step-by-step explanation:
The molar mass of an element is the mass in grams of 1 mole of the element. It is determined by taking the atomic weight of the element on the periodic table, and writing it as g/mol.
Answer:
100 grams
Step-by-step explanation:
5 kg= 5000 g.
5000-4900=100
Answer:
81
Step-by-step explanation:
9 x 9 = 81
So, 81 is the perfect square.
