10x + 2y + 8z - 5x + 4z - 4y = 10x - 5x + 2y - 4y + 8z + 4z = (10 - 5)x + (2 - 4)y + (8 + 4)z = 5x - 2y + 12z
By collecting like terms: 8z+4-2x
5 times y is the same as 5y in algebra
That's an equation where x = 5
Algebra is using variables such as x to solve a problem. One example is x+3=8 in which x equals 5.
eight times x equals 5
2x-6=x+5 2x -x=6+5 x=11 Check the math.
10x + 2y + 8z - 5x + 4z - 4y = 10x - 5x + 2y - 4y + 8z + 4z = (10 - 5)x + (2 - 4)y + (8 + 4)z = 5x - 2y + 12z
By collecting like terms: 8z+4-2x
5 times y is the same as 5y in algebra
2x - 6 = x + 5 add 6 and subtract x to both sides; x = 11
2*9 - 5 = 18 - 5 = 13
It is an equation.
That's an equation where x = 5
Algebra is using variables such as x to solve a problem. One example is x+3=8 in which x equals 5.
X=5Y= 92x + 11= ?2(5)+11=?10+11= 21
Because of the zero property of multiplication we must first set it equal to zero and factor the equation. z^2+8z=-15 z^2+8z+15=0 (z+3)(z+5)=0 either z+3=0 or z+5=0 So, z=-3 or z=-5 The way I factored it is looked for two numbers that multiplied to give me 15 but added to make 8. 1 and 15 didn't work. 3 and 5 worked.