Answer:
x=4
Step-by-step explanation:
5x-7=13
5x=13+7
5x=20
x=20/5
x = 4
5x - 7 = 13
add 7 to both sides:
5x - 7 + 7 = 13 + 7
5x = 20
divide both sides by 5
98
7
10+4 = 14
14/2 = 7
x = 7