3(x-1) = 2x - y
3x-3 = 2x-y
3x-2x+y = 3
x + y = 3 ----> (1)
2(x+y) = 3+3y
2x + 2y = 3 + 3y
2x + 2y - 3y = 3
2x - y = 3 -----> (2)
make equation (1) and (2) together
x + y + 2x - y = 3+3
3x = 6
x = 2
now make x = 2 in equation (1)
x + y = 3
2 + y = 3
y = 3-2
y = 1
(x,y) = (2,1)
Answer:
Step-by-step explanation:
8/15 + 2/5 = 8/15 + 6/15 + 14/15
Answer:
2×3^2×5^10
Step-by-step explanation:
We presume you want the simplified product ...
3^2×5^2×2×5^3×5^5
The applicable rule of exponents is ...
(a^b)(a^c) = a^(b+c)
The bases are 2, 3, 5. The exponent of 2 is 1; the exponent of 3 is 2; the exponents of 5 are 2, 3, 5, so those get added.
= 2×3^2×5^(2+3+5)
= 2×3^2×5^10
_____
= 175,781,250
