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Earn +20 ptsQ: What is the value of x in 4x plus 15?
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What is the solution to the equation below 4x equals x plus 15?
If: 4x = x+15 Then: x = 5
How do you solve y equals 2x plus 15 and y equals 4x plus 7 using substitution?
y = 2x + 15 y = 4x + 7 Substitute the value of y from the first equation into the second: 2x + 15 = 4x + 7 Subtract 2x from both sides: 15 = 2x + 7 Subtract 7 from both sides: 8 = 2x Divide both sides by 2: 4 = x. Replace x by its value, 4, in the first equation: y = 2*4 + 15 = 8 + 15 = 23 So the solution is (x, y) = (4, 23)
What is 3x plus 5 equals 4x-10?
3x+5= 4x-10+10 +103x+15= 4x-3x -3x15=X
4x - 7 equals -15 what is x?
4x - 7 = -15 4x = -8 x = -2
What is x2 plus 4x plus 3 factorised?
x2 + 4x + 3 = (x + 1)(x + 3)
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