3(x+1)=15?
回答 (13)
2018-06-06 1:39 am
3(x + 1) = 15
3x + 3 = 15
∴ 3x = 15 - 3
∴ 3x = 12
∴ x = 12/3
∴ x = 4
3x + 3 = 15
∴ 3x = 15 - 3
∴ 3x = 12
∴ x = 12/3
∴ x = 4
2018-06-06 1:04 am
Divide both sides by 3 and get:
x+1 = 5
subtract 1 from both sides and get
x=4
x+1 = 5
subtract 1 from both sides and get
x=4
2018-06-06 12:54 am
Multiply the three out. You get 3x + 3 = 15.
Subtract three from both sides. You get 3x = 12
Then divide by 3. You get x = 4.
Subtract three from both sides. You get 3x = 12
Then divide by 3. You get x = 4.
2018-06-06 12:47 am
x = 4. Divide both sides by 3, then subtract 1 from both sides. There's x.
2018-06-06 12:44 am
x=4
2018-06-07 10:52 pm
3(x + 1) = 15
3x + 3 = 15
3x = 12
x = 4.
3x + 3 = 15
3x = 12
x = 4.
2018-06-06 9:11 am
3(x+1)=15
x+1=15/3
x+1=5
x=5-1
x=4
Answer: 4
x+1=15/3
x+1=5
x=5-1
x=4
Answer: 4
2018-06-06 6:32 am
3(x + 1) = 15
x + 1 = 5
x = 4
x + 1 = 5
x = 4
2018-06-06 6:05 am
3(x + 1) = 15
x = 4
x = 4
2018-06-06 1:41 am
1.) Distribute the 3: 3(x +1)=15 ---> 3x+3=15
2.) Subtract 3 from both sides, first step in isolating x: 3x+3=15 ---> 3x=12
3.) Divide both sides by 3, isolating x: 3x=12 ---> x=4
x=4
2.) Subtract 3 from both sides, first step in isolating x: 3x+3=15 ---> 3x=12
3.) Divide both sides by 3, isolating x: 3x=12 ---> x=4
x=4
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