1.5/8x-22=3/7x 2.x/5-6=x/6-2 3.(1+1/6)x+(7500-x)*(1-1/5)=7100

1.5/8x-22=3/7x 2.x/5-6=x/6-2 3.(1+1/6)x+(7500-x)*(1-1/5)=7100

1.5/8x-22=3/7x
Multiply it by 56
35x-1232=24x
35x-24x=1232
11x=1232
x=112
2.x/5-6=x/6-2
Multiply by 30
6x-180=5x-60
6x-5x=-80-60
x=120
3.(1+1/6)x+(7500-x)*(1-1/5)=7100
7/6 x+(7500-x)4/5=7100
7/6 x+6000-4/5 x=7100
7/6 x-4/5 x=1100
Multiply by 30
35x-24x=33000
11x=33000
x=3000

How do you calculate x △ X / 5 + X / 4 = 2.22?

General score (x / 5 + X / 4)
X / (x / 5 + X / 4)
I came out in the morning

Prove (x + 1) (x + 3) (x + 5) (x + 7) + 15 = (x "+ 8x)" + 22 (x "+ 8x) + 120

Prove: (x + 1) (x + 3) (x + 5) (x + 7) + 15 = [(x + 1) (x + 7)] * [(x + 3) (x + 5)] + 15 = [(x ^ 2 + 8x) + 7)] * [(x ^ 2 + 8x) + 15] + 15 = (x ^ 2 + 8x) ^ 2 + 15 (x ^ 2 + 8x) + 7 (x ^ 2 + 8x) + 105 + 15 = (x ^ 2 + 8x) ^ 2 + 22 (x ^ 2 + 8x) + 120

(x+4)^2(8x-16)=

(x+4)²(8x-16)
=(x²+8x+16)(8x-16)
=8x³-16x²+64x²-128x+128x-256
=8x³+48x²-256
If you don't understand, I wish you a happy study!