2 answers:
20=3x-1
move -1 to the other side
sign changes from -1 to +1
20+1=3x-1+1
20+1=3x
21=3x
divide both sides by 3 to get x by itself
21/3=3/3x
Cross out 3 and 3, divide by 3 and then becomes 1*1*x=x
21/3=x
Answer:
x=7
Answer:
Let’s solve your equation step-by step.
20=3x-1
Step 1:flip the equation.
3x-1=20
Step 2:Add 1 to both sides.
3x-1+1=20+1
3x=21
Step 3:divide both sides by 3.
3x/3=21/3
X=7
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Pretty sure the answer is 20
Hope this helps :)
Answer:
Step-by-step explanation:
Let the other number = x
x + 40 = 73
Subtract 40 from both sides
x + 40 - 40 = 73 - 40
x = 33
Answer:
40 hens, 5 sheep
Step-by-step explanation:
40 x 2 = 80 (hens have 2 legs)
100 - 80 = 20 ----> 20 legs left for sheep,, sheep have 4 legs
20/4 = 5 so there are 5 sheep
Answer:
q = 3 + 1/2r
Step-by-step explanation:
10q - 5r = 30
We want to solve for q
Add 5r to each side
10q - 5r+5r = 30+5r
10q = 30+5r
Divide by 10
10q/10 = 30/10 +5r/10
q = 3 + 1/2r
Answer:
The answer is 22
Step-by-step explanation:
(3 • 5) = 15
7 + 15 = 22
22 is your answer
