solve the simultaneous equations 8x + 2y = 48 , 14x + 6y = 94

Step 1) Rearrange the first equation to make y the subject: 8x + 2y = 48 , 2y = 48 - 8x , y = 24 - 4x. step 2) Sub y = 23 - 4x into the second equation: 14x + 6(24 -4x) = 94 , 14x + 144 - 24x = 94 Step 3) solve for x: 14x + 144 - 94 = 24x , 50 = 24x - 14x , 50 = 10x , x = 5. Step 4) sub x=5 into either equation: 8(5) + 2y = 48 , 40 + 2y = 48 , 2y = 8y = 4 Step 5) check answers by subbing in both x and y values into the other equation: 14(5) + 6(4). = 94 , 70 + 24 = 94

Answered by Harrison S. Maths tutor

2506 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

solve the inequality 5x + 3> 3x - 6


Solve the simultaneous equations: (1) 4x + y = 7 and (2) x - 3y = 5


Solve the simultaneous equations, 8x + 4y = 4 and 6x - 18y = 16


Celine has £5 to buy pens and rubbers. Pens are 18p each. Rubbers are 30p each. She says “I will buy 15 pens. Then I will buy as many rubbers as possible. With my change I will buy more pens.” How many pens and how many rubbers does she buy? [5 marks]


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences