Question

X×7=36+13
34+X=8×6
X÷6=42

Answer 1

x*7 = 36 + 13
x*7 = 49 
x = 49 : 7 
x = 7

34 + x = 8*6
34 + x = 48
x = 48 - 34 
x = 14

x:6 = 42
x = 42 * 6
x = 252

Answer 2

X×7=36+13
7х=49
х=7

34+х=8х6
34+х=48
х=48-34
х=14

х:6=42
х=42х6
х=252