5(2x+5)=2(3x-4)+45.nilai x+7=

5(2x + 5) = 2(3x -4) + 45
10x + 25 = 6x -8 +45
10x - 6x = 45 - 8 - 25
4x = 12
x = 12/4
x = 3


jadi nilai x + 7 = (3) + 7 = 10

10x+25=6x-8+45
10x-6x=-8-25+45
4x=12
x=12/4
x=3

Jadi x+7=3+7
x+7=10