0
Your answer is x = 1 & y = -2
Given Equations:
2x-y=4
y=5x-7
Using Substitution
Substitute y for 5x-7 to simplify the equation to only 1 variable.
2x-(5x-7)=4
Simplify
a. 2x-5x+7=4
b. -3x=-3
c. x=1
Solve for y
Plug your x into the y equation
y=5*(1)-7
y=-2
Check your answers
Plug your variables into the multi-varible equation
2*(1)-(-2) = 4
Still curious? Ask our experts.
Chat with our AI personalities
JordanLooking for a career mentor? I've seen my fair share of shake-ups.
Chat with Jordan
BlakeAs your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
DevinI've poured enough drinks to know that people don't always want advice—they just want to talk.
Chat with DevinAdd your answer:
Earn +20 ptsQ: 2x-y equals 4 and y equals 5x-7?
Write your answer...
Submit
Still have questions?
Continue Learning about Math & Arithmetic
Evaluate 2xy when x equals 30 and y equals 2?
2xy=2*30*2=120
Does 6xy-8xy equals -2x squared y squared?
No, it equals -2xy. lrn2math
2cy plus 2xy equals 15 solve for y?
Y=15/(2c+2x)
How do you evaluate 2xy times 9 if x equals 3 and y equals 2?
2xy*9 if x=3 and y = 2 2(3)(2)*9 12*9 108 You substitute x and y for their equivalent (3 and 2) then simply multiply 2*x*y, then multiply the answer of that by 9.
When x-y equals 7 and xy equals 8 find the value of x square plus y square?
x2 + y2 = x2 - 2xy + y2 + 2xy = (x - y)2 + 2xy = 72 + 2*8 = 49 + 16 = 65 You could, instead, solve the two equations for x and y and substitute, but the above method is simpler.
Trending Questions
How do you convert 8333.33 in decimal notations?
Is 156 a composite number?
What is the hardest from of math?
Should marbles be allowed in school?
2 goes into 100 how mamy times?
What is larger than one fifth but smaller than one fourth?
What name means small or tiny?
What is 3.2 repeating as a fraction?
How do you solve4x-7 equals 2x plus 5 what is x?
What can you multiply that equals 35?
What strategies can be used to the least common multiple of two numbers?
What are the factors of 26 48 62?
How many inches are there in 70 meters?
What does the little v mean in maths?
What is the written problem for x 5 y 0?
What three coins make a dollar?
4.35 million look like in numbers?
How do you get the percentage from missing 9 out of 30?
Why sewer in circular shape is preferred?
What is one fourth of a pizza pie?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.