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7subtract by 4 = 3
Curt Eichmann
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What is the value of x if 2x plus 4 equals x plus 7?
2x + 4 = x + 7Subtract 'x' from each side of the equation:x + 4 = 7Subtract 4 from each side:x = 3
2x plus 8 equals x-7?
2x + 8 = x - 7Subtract 'x' from each side of the equation:x + 8 = -7Subtract 8 from each side:x = -15
8x plus 4 equals 6x plus 7 solve x?
Subtract 6x from each side: 2x + 4 = 7Subtract 4 from each side: 2x = 3Divide each side by 2: x = 1.5
X2 plus 3x plus 3 equals 7?
x2 + 3x + 3 = 7Subtract 7 from each side:x2 + 3x - 4 = 0Factor the left side:(x + 4) (x - 1) = 0x = - 4x = +1
What is the answer to 12 equals 7-m?
12 = 7 - mAdd 'm' to each side of the equation:m + 12 = 7Subtract 12 from each side:m = -5
What does n equal if 42 equals 2n plus 7?
42 = 2n + 7Subtract 7 from each side of the equation:35 = 2nDivide each side by 2:17.5 = n
-5 plus 12x equals 18x plus 7?
-5 + 12x = 18x + 7Subtract 7 from each side:-12 + 12x = 18xSubtract 12x from each side:-12 = 6xDivide each side by 6:-2 = x
How do you solve 55 equals 5x plus x plus 7?
55 = 5x + x + 7Combine the 'x's on the right side:55 = 6x + 7Subtract 7 from each side of the equation:48 = 6xDivide each side by 6 :8 = x
Solve for x 55x plus -3 equals 53x plus 7?
55x + (-3) = 53x + 7can be written as55x - 3 = 53x + 7subtract 53x from both sides2x - 3 = 7add three to both sides2x = 10divided both sides by 2x = 5
What math sentence equals 6 only using 7 7 7 7?
using only 7,7,7,7 and get the sum of 6 is 7*7-7/7In wordsmultiply 7 to 7Subtract 7 from that sevenlast divide 7 from that seventhe sentence should be7 * 7 - 7 / 7
What is -9-x equals 4x plus 7?
It's a linear equation in 'x'. You can find the solution like this:-9 - x = 4x + 7Add 'x' to each side:-9 = 5x + 7Subtract 7 from each side:-16 = 5xDivide each side by 5:-16/5 = x
What are the solutions to the simultaneous equation 3x plus 2y equals 5 and x plus 2y equals 7?
3x + 2y = 5x + 2y = 7Subtract (2) from (1) to give: 3x - x + 2y - 2y = 5 - 7→ 2x = -2→ x = -1Substitute for x in (1)3(-1) + 2y = 5→ -3 + 2y = 5→ 2y = 8→ y = 4Substitute for x and y in (2) to check answer:x + 2y = -1 +2(4) = -1 + 8 = 7 as required. Thus:x = -1y = 4
