Answer:
2/7(x-2)=4x
(2×x-2×2)/7 = 4x
(2x-4)/7 = 4x
2x-4×(1) = 4x × 7 ( Cross multiply)
2x-4 = 28
2x = 32
2x÷2 = 32÷2
x=16
Answer:
12
Step-by-step explanation:
Xy = 72
x - y = 1
x = 1 + y
(1+y)y = 72
y + y^2 = 72
y^2 + y - 72 = 0
(y-8)(y+9) = 0
y = 8 , y = - 9
x = 1 + 8
x = 9
y = 8
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48/12=x/5
4=x/5
20=x
so the answer is first one
