Answer:
(1)x=3, y=2
(2)x=19, y=31
Step-by-step explanation:
(1)
4x-3(x-1)=6
4x-3x+3=6
x+3=6
x=3
(2)
.76x+3.68y=128.52
x+y=50
.76x+3.68(50-x)=128.52
.76x+184-3.68x=128.52
.76x-3.68=-55.48
-2.92x=-55.48
x=19
19+y=50
y=31
This took so much work.... I hope I helped you well.
y=-3/7x +1/7
Divide the total centimeters by centimeters per inch:
51.78 / 2.54 = 30.386 inches.
-5
(-3)(5) =-15 +10 =-5
is to multiply both denominator and numerator. 
