By what factor would you need to multiply the first and second equations to eliminate x? by what factor would you need to multiply the second and third equations to eliminate x?

Equation 1 : x + y + z = 3.25
equation 2 : 12x + 2y + z = 9.50
equation 3 : 2x + 4y + 5z = ??

u would multiply equation 1 by -12take that result and add it to equation 2this eliminates x.

u would multiply equation 3 by -6...take that result and add it to equation 2this eliminates x

1765.8

Step-by-step explanation:

9% of 1620 = 145.8

145.8 + 1620 = 1765.8 which is total amount to be paid back