Sanjay uses the steps below to solve the equation 40+ (10+20) = 8 5
BILE
Step 1
Multiply both sides of the equation by z
su
40+ 10+2p= 20
Step 2
Simplify like terms
60+ 10 = 20
Step 3
Subtract 10 on both sides of the equation.
60= 10
Step 4
Divide both sides of the equation by 6
2
p= 6 = 3
Which is the first error that Sanjay made when finding the solution?
in step one, he multiplied by 5/2 instead by 2/5 in step 1, he did not multiply 4p by 5/2 when both sides by 5/2 in step 3, he should have added 10 to both sides of the equation instead of subtracting 10
in step three he should have divided both sides by 6 instead of subtracting 10