
Concept explainers
To evaluate:the given expression by using the given value.

Answer to Problem 1.1EP
5x+z(2y−3)=−44 .
Explanation of Solution
Given:
The given expressionis 5x+z(2y−3) .
The given valueis x=2.2,y=−4,z=5 .
Calculation:
As the given expressionis 5x+z(2y−3) .
Now, substitutes the given valueexpression. Therefore,
5x+z(2y−3) {given expression}=5(2.2)+5(2(−4)−3) {substitutes these value}=11+5(−8−3) {simplify}=11+5(−11) {simplify}=11−55 {simplify}=−44
Hence, the value ofgiven system of equation is 5x+z(2y−3)=−44 .
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