Solve for y and x, where x=y+1 and y=2x+3

Simultaneous equations:
x=y+1 y=2x+3
First solve for x. y=2x+3 so first equation becomes: x=(2x+3)+1 x-2x-3-1=0 -1x-4=0x+4=0 x=-4
Solve for y: y=2x+3 y=2(-4)+3 y=-8+3y=-5

TS
Answered by Tom S. Maths tutor

3651 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Edexcel, 2016, Foundation Maths GCSE: A running club has 50 members. 30 members take part in road races, 15 members take part in fell races, 12 members do not run in road or fell races. How many members run both fell and road races?


Solve 5x - 2 > 3x + 11


The sides of a rectangle are x and (x+2), where x>0 the area of the rectangle is 8, what is the value of x?


Solve the following equation: 7x + 6 = -5x - 42


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences