Х+(х+7)+3×(х+7)=478 решите уравнение

Question

Х+(х+7)+3×(х+7)=478 решите уравнение

Answer 1

X+(x+7)+3×3(x+7)=478
x+x+7+3x+21=478
5x+28=478
5x=450
x=90

Answer 2

X + x+ 7+ 3x+ 21 = 478
5x + 28 = 478
5x = 478-28
5x = 450
x = 450\5
x= 90