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Q: 3x plus 4 - 5x - 7?

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8x = 32 so x = 4

It is a mathematical equation, usually written like this: 5x - 7 + 2x = 3x - 2 + 4x

3x + 2 + 2x = 7; 3x + 2x = 5x, so 5x + 2 = 7; 7-2=5, so 5x=5. 5x divided by 5 and 5 divided by 5 equals 1, so x equals 1.

x=-3

f(x)=5x, g(x)=3x-7 gf(x)= = g(f(x)) = g(5x) = 3*(5x) - 7 = 15x-7 So gf(4) = 15*4-7=53

Related questions

It is 5x - 4

8x-4 = -7+5x 8x-5x = -7+4 3x = -3 x = -1

If: 3x+8-x = 5x-4 Then: x = 4

4

3x+7=5x-13 ----> 3x-5x=-13-7 ----> -2x=-6 -----> x=3

5x+7

5x+7=3x-21 -7= -7 5x=3x-14 -3x=-3x 2x=-14 2x/2x=2x/-14 x=-7 The Answer Is -7 -

5x + 4

3x - 7 = 5x + 133x - 5x = 13 + 7-2x = 20x = -10x=-3

8x + 7

8x - 4 = -7 + 5x8x - 5x - 4 = -7 + 5x - 5x subtract 5x from both sides3x - 4 + 4 = -7 + 4 add 4 to both sides3x = -3x = -3/3 = -1

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