Question

A) 7×-4=5×+6
B) 10+3×=2×+9
C) 5×+2-×+8=0
D) 5y-13=7y-19

Answer 1

a)7x-4= 5x+6
7x- 5x = 6 + 4
2x = 10
 x= 5
b) 10+3×=2×+9 
3x- 2x = 9-10
x= -1
c)5×+2-×+8=0 
5x -x = -8 -2
4x = -10
 x= -2,5
d) 5y-13=7y-19
-13+19= 7y - 5y
6 = 2y
y= 3