Substitution Introduction

A synonym for solve.

(a)  

This is a letter that can be replaced by any given value (e.g. $t$ ).

(a)  

Evaluate the expression $0.1m+8-12n$ when $m=30$ and $n=\frac{1}{4}$  

(a)  

Evaluate the expression $5w-\frac{w}{x}$ when $w=6$ and $x=2.$  

(a)  

Evaluate the expression $8+\frac{w}{4}$ when $w=16.$  

(a)  

Evaluate the expression $\frac{p}{2}-5$ when $p=14.$  

(a)  

Evaluate the expression $13-0.75w+8x$ when $w=12$ and $x=\frac{1}{2}.$  

Evaluate the expression $ab-0.5b$ when $a=1$ and $b=5.$  

Evaluate the expression $\frac{3}{7}r+\frac{5}{8}s$ when $r=14$ and $s=8.$  

Evaluate the expression $8r-rs$ when $r=6$ and $s=5.$