0
x=4
Restate the question: Solve for x: 5x-1 = x + 15
5x-1+1 = x+15+1 {Add 1 to both sides
5x = x+16
5x-x = x-x+16 {Subtract x from both sides
4x = 16
4x/4 = 16/4 {divide both sides by 4
x = 4
Check:
5(4)-1 = 20-1 = 19
4+15 = 19 -> OK
5x -1 = x + 15
first group all the like terms that is number with numbers and unknown variables with unknown variables.. NB that when and numbers or variables are carried over an equal sign the sign changes oppositely
therefore
5x - x = 15 + 1
4X = 16
MAKE X THE SUBJECT BY DIVIDING BOTH SIDES BY 4 WE HAVE
X= 4
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What is y equals 5x-15 if x equals1?
If y equals 5x-15 and x equals 1 then the value of y comes out to be -10. So y equals 5x-15 is -10.
What is y equals 5x plus 1 in standard form?
5x - y + 1 = 0
5x plus 3y equals 17 5x - 2y equals -3?
Multiply the bottom equation by -1
What is the answer to this math problem 100x2 plus 40x plus 4 equals?
Factored, that's 4(5x + 1)(5x + 1) or 4(5x + 1)2 If the whole thing equals zero, x = -1/5
Solve by the substitution method 15x-20y equals -1 15y equals 2 plus 5x?
Given: 15x - 20y = -1 15y = 2 + 5x Then: 15x -20(2 + 5x)/15 = -1 ∴15x -40/15 - 100x/15 = -15/15 ∴225x/15 - 100x/15 = 40/15 - 15/15 ∴125x = 25 ∴x = 1/5 Check: 15(1/5) - 20(1/5) = -1 ∴3 - 4 = -1 ∴-1 = -1
