a) 31,5 - X = 2.1
X = 31,5 - 2,1
X = 29.4
b) X . 12,5 = 111
X = 111 : 12,5
X = 8.88
a)\(x=31,5-\left[\left(18,6-12,3\right):3\right]=31,5-2,1=29,4\)
b)\(x=\left[\left(32,6-10,4\right).5\right]=11112,5=8,88\)
\(a,31,5-x=2,1\)
\(x=31,5-2,1\)
\(x=30,8\)
\(b,x\cdot12,5=111\)
\(x=8,88\)
a 31.5 - x =6.3 : 3
31.5 - x =2.1
x = 31.5 - 2.1
x = 19.4
b 12.5x = 22.2 x 5
12.5x = 111
x = 111 : 12.5
x = 8.88
a,31,5−x=2,1a,31,5−x=2,1
x=31,5−2,1
x=30,8x=30,8
b,x⋅12,5=111b,x⋅12,5=111
x=8,88
