This is algebra.
Let's take 2 numbers, x and y. What we want is xy = -120 and x+y = -14.
So we have two equations. Let's solve for one of the numbers and move that over to the other equation.
x+y=-14
x=-14-y
Let us now plug that x into the other equation.
(-14-y)y=-120
We now distribute the y to both -14 and -y.
-14y-y^2=-120
moving everything to one side we get
0=y^2+14y-120
now it's just a matter of solving for y, which can be found using the quadratic equation (-b+-(b^2-4ac)^(1/2))/(2a), where a=1, b=14, and c=-120.
Let's try plus first
(-14+(14^2-(4)(-120))^(1/2))/2
(-14+(196+480)^(1/2))/2
(-14+26)/2
6
so y=6. Let's plug that into one of the equations we had, x+y=-14.
x+6=-14
x=-20
To see if this works, let's try y=6 and x=-20 on both equations
-20(6)=-120
-20+6=-14
They work!
By the way, if we had tried minus in the quadratic equation, we would've gotten -20 for y and x as 6.
-20 and -6
None of the factor pairs of 120 add up to -14. If that was -120, you could use -20 and 6.
The original number is 14.
134
To solve the math problem 14 x 26, you multiply the number 14 by 26 as follows. First, multiply 14 by 6, the last number of 26. That gives you 84. Then multiply 14 by 2, which gives you 28. Since this answer goes in the tens column, rather than the units column, however, you need to add a zero, giving you 280. Then you add 84 and 280, which gives you 364, which is your answer.
-144
None of the factor pairs of 120 add up to -14. If that was -120, you could use -20 and 6.
-134
The number is 10 because (5*10)+14 = 64
The original number is 14.
It means you need to multiply 7 by 14 and then add 1 to the answer.It means you need to multiply 7 by 14 and then add 1 to the answer.It means you need to multiply 7 by 14 and then add 1 to the answer.It means you need to multiply 7 by 14 and then add 1 to the answer.
One trick for multiplying by 12 is to multiply the number by 10 and then add two times the number. For example, if you want to multiply 7 by 12, first multiply 7 by 10 to get 70, and then add 7*2=14 to get 84.
-38
6 and 8 do.
14... yay I'm so clever!!!
134
-14 and -14 Add them together to get -28 Multiply them to get 196
-136