△+○=60，○+□=51，□+△=39，□=______ ．△=______ ，○=______ ．

△+○=60，○+□=51，□+△=39，□=______ ．△=______ ，○=______ ．

The answer is: 15, 24, 36

Solution equation: X-7 / 12x = 11 / 60

(1-7/12)X=11/60
(5/12)X=11/60
X=11/60÷5/12
X=11/25

Solve the equation x △ 5 / 8 = 1 / 12

X÷5/8=1/12
X=5/8×1/12
X=5/96

4 / 1:12 / 1 = 8: X to solve the equation

4/1：12/1=8：x
4：12=8：x
4x=8*12
x =24

Solution equation: 1. X + 5 / 8-7 / 12 = 1 / 6
Second question: 1 / 4 + x = 2 / 5-1 / 10 third question: 68-20y = 12 fourth question; 9x △ 6 = 15 fifth question: 4x-36 = 20

Second question:
x=8/20-2/20-5/20
x=1/20
Third question:
-20y=12-68
-20y=-56
y=-56/(-20)
y=2.8
Fourth question:
9x=15x6
9x=90
x=90/9
x=10
Question 5:
4x=20+36
4x=56
x=56/4
x=14

(x-3) multiply by 1.8 + 5 = 12.2 to solve the equation

7

Solution equation: 1 / x + 2-1 / X-8 = 1 / x + 3
Solution equation: 1 / x + 2-1 / X-8 = 1 / x + 3-1 / x + 9

A: 1 / (x + 2) - 1 / (X-8) = 1 / (x + 3) - 1 / (x + 9)
[(x-8)-(x+2)]/[(x+2)(x-8)]=[(x+9)-(x+3)]/[(x+3)(x+9)]
-10/(x^2-6x-16)=6/(x^2+12x+27)
-10x^2-120x-270=6x^2-36x-96
16x^2+84x+174=0
8x^2+42x+87=0
Discriminant = 42 ^ 2-4 * 8 * 87 = - 1020

Solution equation (x + 1.5) * 8 = x + 40

(x+1.5)*8=x+40
8x + 12 = x + 40 minus x
7x + 12 = 40 minus 12 on both sides
7x=40-12
7x=28
x=28÷7
x=4

Solution equation: 40 / (x-20) = 0.8

baidu hi sirius_ long

96 * 1-8-40% x = 7.8 (solving equation)

96*1\8-40%x=7.8
12-0.4x=7.8
0.4x=4.2
x=10.5