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Subjects>Math>Calculus

15 plus 3x 42 then x?

Anonymous

∙ 8y ago

Updated: 4/28/2022

If 15 + 3x = 42, then x = 9

Wiki User

∙ 8y ago

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Continue Learning about Calculus

6x plus 4 3x plus 19 what is x?

6x + 4 = 3x + 19 3x + 4 = 19 3x = 15 x = 5 Check it. 30 + 4 = 15 + 19 It checks.

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15 + 14 + 14 + 11 + 2x + x = 75 Collect like terms 54 + 3x = 75 Subtract 54 3x = 21 Divide by 3 x = 7 ■

What is 3x plus 5 equals 4x-10?

3x+5= 4x-10+10 +103x+15= 4x-3x -3x15=X

What is 5x plus 9 equals 3x 15?

if you meant 5x+9=3*15 then, 5x = 36, x = 7.2 if you meant 5x+9=3x+15 then, 2x = 6, x = 3

What is 2X plus X plus 5 plus 3X-6?

2x+x+5+3x-6=6x-1

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Related Questions

What Is The Answer To 3x plus 12 42?

3x + 12 = 42 3x = 30 x = 10

What does 3x plus 42 equals 6x plus 12 mean?

3x+42=6x+12 42=6x-3x+12 42=3x+12 42-12=3x 30=3x 10=x

What is x when x plus 5 equals 3x plus 15?

x+5 = 3x+15 x-3x = 15-5 -2x = 10 x = -5

What are the sum of three consecutive numbers of 42?

x+(x+1)+(x+2)=42 3x+3+42 3x=45 x=15 x+1=15 x=14 x+2=15 x+13 so the three consecutive numbers are 13,14, and 15

What is the value of x when 3x - 5 plus 3x equals 1x plus 15?

3x - 5 + 3x = 1x + 15 3x + 3x -1x = 15 + 5 5x = 20 5x/5 = 20/5 x = 4

What is the answer to 3x plus 12x equals 15?

3x+12x = 15 15x = 15 x = 1

What is (3x - 7) plus (-4x - 8)?

It is -x -15.

6x plus 4 3x plus 19 what is x?

6x + 4 = 3x + 19 3x + 4 = 19 3x = 15 x = 5 Check it. 30 + 4 = 15 + 19 It checks.

What number am i if you triple me subtract 7 and add 4 you get 42?

3x-7+4 = 42 3x-7 = 38 3x = 45 x=15

What is x in this equation 3x plus 4 equals -11?

3x+4=-11 3x=-15 x=-5

How do you factorise 3x plus 15?

X=5

What is the value of x when 3x -2x plus 15?

negative 15

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