Discover the best answers at Westonci.ca, where experts share their insights and knowledge with you. Join our platform to connect with experts ready to provide precise answers to your questions in various areas. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

2x - 5y = 20
y = x - 7


Sagot :

Answer:

2x _ 5(x_7)=20

2×_5×+35=20

-3×=-15

×=5