Answer:
5x + 6y = 20_____(1)
8x - 6y = -46_____(2)
Solving simultaneously:
Eqn(1) + Eqn(2)
5x + 8x + 6y + (-6y) = 20 + (-46)
13x = -26
x = -2
substituting this into Eqn (1):
5(-2) + 6y = 20
-10 + 6y = 20
6y = 30
y = 5
hence:
x = -2,y = 5.
Answer:
Step-by-step explanation:
my bad its
34x3c3x
Answer: total Distance = 60km
Time = 4.5hrs
Speed = 60/4.5
13⅓km/hr
Step-by-step explanation:
Answer:
360
Step-by-step explanation:
- 3/4a - 16 = 2/3a + 14 ⇒ collect like terms
- 3/4a - 2/3a = 14 + 16 ⇒ bring the fractions to same denominator
- 9/12a - 8/12a = 30 ⇒ simplify fraction
- 1/12a = 30 ⇒ multiply both sides by 12
- a = 30*12
- a = 360 ⇒ answer
