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(7x + 4) = (3x + 7) Subtract (3x + 4) from both sides of the equation. (7x + 4) - 3x - 4 = (3x + 7) - 3x - 4 4x = 3 x = 3/4 Check: (7x + 4) = 7 (3/4) + 4 = (21/4) + 4 = (21/4) + (16/4) = 37/4 (3x + 7) = 3 (3/4) + 7 = (9/4) + 7 = (9/4) + (28/4) = 37/4 Yay.
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4x+9 = 7x+3 4x-7x = 3-9 -3x = -6 x = 2
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3+3x+7x=13 3x+7x=10 10x=10 x=1
How do you solve Sin x plus sin 3x plus sin 5x plus sin 7x equals?
sin7x-sin6x+sin5x
How do you slove 3x plus 1 plus 4x-5 equals 31?
combine like terms. 3x+1+4x-5=31 3x+4x=7x 7x+1-5=31 1-5=-4 7x-4=31 then solve it 7x=35 x=5
8 plus 7x equals 20 plus 3x what is x?
8+7x = 20+3x 7x-3x = 20-8 4x = 12 x = 3
7x plus 16 equals 3x plus 4?
7x + 16 = 3x + 4 4x = -12 x = -3
3x plus 4x equals 84 7x equals 84?
3x + 4x = 847x = 84divide both sides by 7x = 12
7x plus 4 equals 3x plus 16 equals?
x=6
