X = 135 and y = 15 Solved by addition and substitution
2x/3=x/2+20 (2x/3=x/2+20)6 4x=3x+120 4x-3x=120 x=120
If 4x=120, x=30.
If 40 plus x equals 25 then x is equal to -15.
In 27.5 years. [By the way, I think you mean x+x+95=150.] Let x be the number of years in the future when the sum of their ages will be 150. In x years, the younger person will be 45+x and the older will be 50+x. The sum of their ages will be 150, and the equation to find x is given by: (45+x)+(50+x)=150 Now solve for x: (45+x)+(50+x)=150 95+2x=150 2x=150-95=55 x=55/2=27.5 So the sum of their ages will be 150 in 27.5 years. The younger person will be 45+27.5=72.5 and the older person will be 50+27.5=77.5.
15 (x = 135)
15
x-y = 120 x+y = 150 add equations: 2x = 270 x = 135 y = 15
X = 135 and y = 15 Solved by addition and substitution
Well, honey, if you're looking for a math lesson, I'm here to deliver. 150 plus 350 equals 500. You're welcome for the free education, darling.
120
You would formulate this problem X/100 * 150 = 72 and solve for X.
28 + 2x = 120 2x = 120 - 28 2x = 92 x = 92/2 x = 46
-171 = 19x so x = -9
-.6x+.5x+9=-3 -.1x=-12 x=120
There are 120 solutions.
14400