Answer: x=7, y=2
Step-by-step explanation:
1. -2(-2x+7y=-7) -> 4x-14y=14
2. 4x-14y=14
-5x+14y=-7
3. -x = 7, x=7
4. -5(7)+14y=-7
5. -35+14y=-7
6. 14y=28, y=2
Multiplied by the cross
4/15 = x /75
15•x=4•75
15x=300
x= 300 : 15
x=20
t/9 = 35/6
9•35 = t•6
315 =6t
315 : 6 = t
52,5 = t
Answer:yes
Step-by-step explanation:
Answer:
the total charge of 145 call with all charge and vat is 181.25