Answer:
-1. is -3/7
Step-by-step explanation:
6×-4/11*7 ÷ (4/3×6/11)
-24/11×7 ÷ (4/3×6/11)
-24/77 ÷ (4/3×6/11)
-24/77 ÷ (24/3×11)
-24/77 ÷ 24/33
-24/77 × 33/24
-1/77 × 33
-33/77
-3/7
Answer:
x=70
y=75
Step-by-step explanation:
2x+x+5-35=180
3x-30=180
3x=210
x=70
2(70)-35=105
180-105=75
y=75
Answer:
y = 9,25
Step-by-step explanation:
(5*0,3) + 2y = 20 (x=0,3)
1,5 + 2y = 20 . (-1,5)
2y = 18,5 ( /2)
y = 9,25
B. Exactly one solution
7y +21 = 5y +8
7y +13=5y
13=-2y
-6.5=y
