Question

[(X+360:4)x5+700]:600=2
[(15+75:X)x13+500]:20=38
[5x(2xX+3 )+4X(2Xx+3)]:5=27
2x{27-2x[3xX-(35:5-2x3)]+3}:4=10
[3x(3X+7)+9]:16=3
2x(3X+2)-22=5x(X+1)+78

Answer 1

(x+90)*5+700=2*600
5x+450=1200-700
5x=500-450
x=50:5
x=10

(15+75:X)*13+500=38*20
(15+75:x)*13=760-500
15+75:x=260:13
75:x=20-15
x=75:5
x=15

10x+15+8x+12=27*5
18x=135-27
x=108:18
x=6


27-2*[3x-(35:5-2*3)]+3=10*4:2
27-2(3x-1)+3=20
27-6x+2+3=20
-6x=20-32
-6x=-12
x=12:6
x=2

9x+21+9=3*16
9x=48-30
x=18:9
x=2

6x+4-22=5x+5+78
6x-5x=78-4+22
x=96