4x - 2y - z = - 5 ______×2x - 3y + 2z = 3 _______×13x + y - 2z = - 5 ______×1
8x - 4y - 2z = - 10x - 3y + 2z = 33x + y - 2z = - 5
8x - 4y - 2z = - 10(+) x - 3y + 2z = 3_____________9x - 7y = - 77y = 9x + 7y = 9/7x + 1
x - 3y + 2z = 3(+) 3x + y - 2z = - 5_____________4x - 2y = - 24x - 2(9/7x + 1) = - 24x - 18/7x - 2 = - 210/7x = 0x = 0
y = 9/7(0) + 1y = 1
0 - 3(1) + 2z = 32z = 6z = 3
Answer:
value of the equation will be 87
Step-by-step explanation:
by putting value of n as 7 in given equation
we will get,
(6×7) + 45 = 42 + 45 = 87
90+87+88.7= 265.7/3 = 88.56 94.3 is the answer
Anything that is lower than 0.6 will work.
To find the unit rate, we just have to divide the 3 by 5 to get 0.6. In your tables, you can do the same thing. Find the equation, and then compare the rate with 0.6. You are looking for values less than 0.6.
