Solving multi-step problems using linear equations in one variable

Solve the equation a = m – n for the variable n.

• ​n = a + m

• ​n = m – a

• ​n = a – m

• ​n = –m – a

Given the equation y = mx + b.  What should we do first to solve for x?

• Add

• Multiply

• Subtract

• Divide

A = l x w solve for w

• I can't solve without numbers

E=IR(R)

• R=E

• R=E/I

• R=I/E

• R=I

Solve for x:
ax - b = c+d

• x = a(c + d + b) 
• x = (c + d) / (a-b) 
• x = a / (c + b + d)
• x= (c + b + d)/a

What is the first and second step to solve for " y " if the equation is 15x + 3y = 25

• subtract 15x from both sides

• add 15x to both sides and divide by 3

• subtract 15x from both sides and divide by 3

y - x = ab

• x = ab - y

• -x = ab + y

• x = -ab +y

What is the second step to solve for x?

• multiply both sides of the equation by b

• add both sides of the equations by v

Answer explanation

$\ v+by=x-v\ +\ v$

Given  $M=5N+6P$ , solve the equation for P. 

•  $P=\frac{M+5N}{6}$  

•  $P=\frac{M-5N}{6}$  

•  $P=M-5N+6$  

•  $P=M-5N$  

ax+r=7
solve for r $\$  

•  $r=7-\frac{a}{x}$  
  

• r=7-ax

• r=7+ax

• r=7ax