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lapo4ka [179]
3 years ago
9

Write an expression for 20 times the sum of 4 and 2

Mathematics
2 answers:
marta [7]3 years ago
8 0

Answer:

20x6

Step-by-step explanation:

20x (x stands for multiply/times)

6(sum/add 4+2)

20x6

Hope this helps.

Lady bird [3.3K]3 years ago
3 0

Answer:

20 x (4+2)

Step-by-step explanation:

20 x (4+2)

20 x 6

120

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3x+3y+6z=9
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Step 1: use Eq 2 to solve for x
x+3y+2z=5
x= -3y-2z+5
Step 2: Solve for y unsing Eq 1
3x+3y+6z=9
3y= -3x-6z+9
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Step 3: plug in x= -3y-2z+5 to solve for the value of y
y=-x-2z+3
y= (-1)(-3y -2z +5) - 2z+3
y= 3y+2z-5- 2z+3
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Step 4: plug y= 1 into the x= equation 
x= -3y-2z+5
x= -3(1)-2z+5
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Step 5:Plug y= 1 and x= -2z+2 into the 3rd equation to solve for z
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12z= -3(-2z+2)-12(1)+ 18
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6z= -18+18
6z=0
z=0

Step 6: Plug z in to solve for x
x=-2z+2
x= (-2)(0)+2
x= 2

ANSWER:
x,y,z = 2,1,0
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