Answer:
x=-6,11
Step-by-step explanation:
Break down the problem into these 2 equations.
2x-5=17
-(2x-5)=17
2 Solve the 1st equation: 2x-5=17
x=11
3 Solve the 2nd equation: -(2x-5)=17
x=-6x
4 Collect all solutions.
x=-6,11
Green family=15n
n is number of hours
Bryant family= 40x
x is number of hours
15n+40x=1450L
n+x=55
use simultaneous equations
(15n+40x=1450)-(15n+15x=825)
25x=625
x=25hours
n=55-x
n=55-25=30hours
Answer:
a negative number times a negative number is always positive.
Answer:
X=6 and y=-7
Step-by-step explanation: